Names of 1640
| Nominal | 1640 |
| Cardinal | one thousand six hundred forty |
| Ordinal | 1,640th |
| This number as US currency | one thousand six hundred forty dollars |
| Is 1640 an odd number? | 1640 is NOT an odd number |
| Is 1640 an even number? | 1640 is an even number |
| Is 1640 a palindrome? | 1640 is NOT a palindrome number |
| Is 1640 a triangle number? | 1640 is NOT a triangle number |
1640 in other Bases
| Base 2 (Binary) | 110011010002 |
| Base 3 (Ternary) | 20202023 |
| Base 4 (Quaternary) | 1212204 |
| Base 5 (Quinary) | 230305 |
| Base 6 (Senary) | 113326 |
| Base 8 (Octal) | 31508 |
| Base 12 (Duodecimal) | B4812 |
| Base 16 (Hexadecimal) | 66816 |
| Base 20 (Vigesimal) | 42020 |
Primes and Factors tests for 1640
| Is 1640 a Prime Number? | 1640 is NOT a prime |
| Is 1640 a perfect number? | 1640 is NOT a perfect number |
| Is 1640 a Mersenne Prime? | 1640 is NOT a Mersenne prime |
| Is 1640 a Fermat Prime? | 1640 is NOT a Fermat prime |
| Is 1640 a Fibonacci Prime? | 1640 is NOT a Fibonacci prime |
| Is 1640 a Partition Prime? | 1640 is NOT a Partition prime |
| Is 1640 a Pell Prime? | 1640 is NOT a Pell prime |
| Prime Factors | Prime factors of 1640 |
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1640 in other Numerals
| 1640 in Roman Numeral | MDCXL |
| 1640 in Chinese Numeral | 壹仟陸佰肆拾 |
| 1640 in Egyptian Numeral | 𓆼𓍧𓎉 |
| 1640 in Babylonian Numeral |   |
Roots and stuff for 1640
| Is 1640 a square number? | 1640 is NOT a square number |
| Is 1640 a cube number? | 1640 is NOT a cube number |
| Square root of the number 1640 | 40.496913462633 |
| Cube root of the number 1640 | 11.792737079941 |
Recreational math for 1640
| Number 1640 reversed | 0461 |
| Sum of the digits | 11 |
| No of digits | 4 |