1998
Everything about the number 1998 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 1998
| Nominal | 1998 |
| Cardinal | one thousand nine hundred ninety-eight |
| Ordinal | 1,998th |
| This number as US currency | one thousand nine hundred ninety-eight dollars |
Properties (and some facts) of 1998
| Is 1998 an odd number? | 1998 is not an odd number |
| Is 1998 an even number? | 1998 is an even number |
| Is 1998 a palindrome? | 1998 is not a palindrome |
| Is 1998 a triangle number? | 1998 is not a triangle number |
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1998 in other bases
| Base 2 (Binary) | 11111001110 |
| Base 3 (Ternary) | 2202000 |
| Base 4 (Quaternary) | 133032 |
| Base 5 (Quinary) | 30443 |
| Base 6 (Senary) | 13130 |
| Base 8 (Octal) | 3716 |
| Base 12 (Duodecimal) | 11A6 |
| Base 16 (Hexadecimal) | 7CE |
| Base 20 (Vigesimal) | 4JI |
Primes and factors tests for 1998
| Is 1998 a prime number? | 1998 is not a prime number |
| Is 1998 a perfect number? | 1998 is not a perfect number |
| Is 1998 a Mersenne prime? | 1998 is not a Mersenne prime |
| Is 1998 a Fermat prime? | 1998 is not a Fermat prime |
| Is 1998 a Fibonacci prime? | 1998 is not a Fibonacci prime |
| Is 1998 a partition prime? | 1998 is not a partition prime |
| Is 1998 a Pell prime? | 1998 is not a Pell prime |
| Prime Factors | Prime factors of 1998 |
1998 in other numeral systems
| 1998 in Roman numerals | MCMXCVIII |
| 1998 in Chinese numerals | 壹仟玖佰玖拾捌 |
| 1998 in Babylonian numerals |   |
| 1998 in Egyptian numerals | 𓆼𓍪𓎎𓐁 |
Roots and squares for 1998
| Is 1998 a square number? | 1998 is not a square number |
| Is 1998 a cube number? | 1998 is not a cube number |
| Square root of 1998 | 44.698993277254 |
| Cube root of 1998 | 12.595009361425 |
Recreational math for 1998
| Number 1998 reversed | 8991 |
| Sum of the digits | 27 |
| Number of digits | 4 |
Arithmetic tables for 1998
Other pages about 1998
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