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 |
| 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 number |
| Is 1990 a triangle number? | 1990 is NOT a triangle number |
1990 in other Bases
| Base 2 (Binary) | 111110001102 |
| Base 3 (Ternary) | 22012013 |
| Base 4 (Quaternary) | 1330124 |
| Base 5 (Quinary) | 304305 |
| Base 6 (Senary) | 131146 |
| Base 8 (Octal) | 37068 |
| Base 12 (Duodecimal) | 119A12 |
| Base 16 (Hexadecimal) | 7C616 |
| Base 20 (Vigesimal) | 4JA20 |
Primes and Factors tests for 1990
| Is 1990 a Prime Number? | 1990 is NOT a prime |
| 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 |
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1990 in other Numerals
| 1990 in Roman Numeral | MCMXC |
| 1990 in Chinese Numeral | 壹仟玖佰玖拾 |
| 1990 in Egyptian Numeral | 𓆼𓍪𓎎 |
| 1990 in Babylonian Numeral |   |
Roots and stuff 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 the number 1990 | 44.609416046391 |
| Cube root of the number 1990 | 12.578176719435 |
Recreational math for 1990
| Number 1990 reversed | 0991 |
| Sum of the digits | 19 |
| No of digits | 4 |