1990
Everything about the number 1990 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 1990
| Nominal | 1990 |
| Cardinal | one thousand nine hundred ninety |
| Ordinal | 1,990th |
| This number as US currency | one thousand nine hundred ninety dollars |
Properties (and some facts) of 1990
| Is 1990 an odd number? | 1990 is not an odd number |
| Is 1990 an even number? | 1990 is an even number |
| Is 1990 a palindrome? | 1990 is not a palindrome |
| Is 1990 a triangle number? | 1990 is not a triangle number |
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1990 in other bases
| Base 2 (Binary) | 11111000110 |
| Base 3 (Ternary) | 2201201 |
| Base 4 (Quaternary) | 133012 |
| Base 5 (Quinary) | 30430 |
| Base 6 (Senary) | 13114 |
| Base 8 (Octal) | 3706 |
| Base 12 (Duodecimal) | 119A |
| Base 16 (Hexadecimal) | 7C6 |
| Base 20 (Vigesimal) | 4JA |
Primes and factors tests for 1990
| Is 1990 a prime number? | 1990 is not a prime number |
| Is 1990 a perfect number? | 1990 is not a perfect number |
| Is 1990 a Mersenne prime? | 1990 is not a Mersenne prime |
| Is 1990 a Fermat prime? | 1990 is not a Fermat prime |
| Is 1990 a Fibonacci prime? | 1990 is not a Fibonacci prime |
| Is 1990 a partition prime? | 1990 is not a partition prime |
| Is 1990 a Pell prime? | 1990 is not a Pell prime |
| Prime Factors | Prime factors of 1990 |
1990 in other numeral systems
| 1990 in Roman numerals | MCMXC |
| 1990 in Chinese numerals | 壹仟玖佰玖拾 |
| 1990 in Babylonian numerals |   |
| 1990 in Egyptian numerals | 𓆼𓍪𓎎 |
Roots and squares for 1990
| Is 1990 a square number? | 1990 is not a square number |
| Is 1990 a cube number? | 1990 is not a cube number |
| Square root of 1990 | 44.609416046391 |
| Cube root of 1990 | 12.578176719435 |
Recreational math for 1990
| Number 1990 reversed | 0991 |
| Sum of the digits | 19 |
| Number of digits | 4 |
Arithmetic tables for 1990
Other pages about 1990
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