Names of 1491
| Nominal | 1491 |
| Cardinal | one thousand four hundred ninety-one |
| Ordinal | 1,491st |
| This number as US currency | one thousand four hundred ninety-one dollars |
| Is 1491 an odd number? | 1491 is an odd number |
| Is 1491 an even number? | 1491 is NOT an even number |
| Is 1491 a palindrome? | 1491 is NOT a palindrome number |
| Is 1491 a triangle number? | 1491 is NOT a triangle number |
1491 in other Bases
| Base 2 (Binary) | 101110100112 |
| Base 3 (Ternary) | 20010203 |
| Base 4 (Quaternary) | 1131034 |
| Base 5 (Quinary) | 214315 |
| Base 6 (Senary) | 105236 |
| Base 8 (Octal) | 27238 |
| Base 12 (Duodecimal) | A4312 |
| Base 16 (Hexadecimal) | 5D316 |
| Base 20 (Vigesimal) | 3EB20 |
Primes and Factors tests for 1491
| Is 1491 a Prime Number? | 1491 is NOT a prime |
| Is 1491 a perfect number? | 1491 is NOT a perfect number |
| Is 1491 a Mersenne Prime? | 1491 is NOT a Mersenne prime |
| Is 1491 a Fermat Prime? | 1491 is NOT a Fermat prime |
| Is 1491 a Fibonacci Prime? | 1491 is NOT a Fibonacci prime |
| Is 1491 a Partition Prime? | 1491 is NOT a Partition prime |
| Is 1491 a Pell Prime? | 1491 is NOT a Pell prime |
| Prime Factors | Prime factors of 1491 |
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1491 in other Numerals
| 1491 in Roman Numeral | MCDXCI |
| 1491 in Chinese Numeral | 壹仟肆佰玖拾壹 |
| 1491 in Egyptian Numeral | 𓆼𓍥𓎎𓏺 |
| 1491 in Babylonian Numeral |   |
Roots and stuff for 1491
| Is 1491 a square number? | 1491 is NOT a square number |
| Is 1491 a cube number? | 1491 is NOT a cube number |
| Square root of the number 1491 | 38.613469152616 |
| Cube root of the number 1491 | 11.424202198871 |
Recreational math for 1491
| Number 1491 reversed | 1941 |
| Sum of the digits | 15 |
| No of digits | 4 |