Names of 1641
| Nominal | 1641 |
| Cardinal | one thousand six hundred forty-one |
| Ordinal | 1,641st |
| This number as US currency | one thousand six hundred forty-one dollars |
| Is 1641 an odd number? | 1641 is an odd number |
| Is 1641 an even number? | 1641 is NOT an even number |
| Is 1641 a palindrome? | 1641 is NOT a palindrome number |
| Is 1641 a triangle number? | 1641 is NOT a triangle number |
1641 in other Bases
| Base 2 (Binary) | 110011010012 |
| Base 3 (Ternary) | 20202103 |
| Base 4 (Quaternary) | 1212214 |
| Base 5 (Quinary) | 230315 |
| Base 6 (Senary) | 113336 |
| Base 8 (Octal) | 31518 |
| Base 12 (Duodecimal) | B4912 |
| Base 16 (Hexadecimal) | 66916 |
| Base 20 (Vigesimal) | 42120 |
Primes and Factors tests for 1641
| Is 1641 a Prime Number? | 1641 is NOT a prime |
| Is 1641 a perfect number? | 1641 is NOT a perfect number |
| Is 1641 a Mersenne Prime? | 1641 is NOT a Mersenne prime |
| Is 1641 a Fermat Prime? | 1641 is NOT a Fermat prime |
| Is 1641 a Fibonacci Prime? | 1641 is NOT a Fibonacci prime |
| Is 1641 a Partition Prime? | 1641 is NOT a Partition prime |
| Is 1641 a Pell Prime? | 1641 is NOT a Pell prime |
| Prime Factors | Prime factors of 1641 |
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1641 in other Numerals
| 1641 in Roman Numeral | MDCXLI |
| 1641 in Chinese Numeral | 壹仟陸佰肆拾壹 |
| 1641 in Egyptian Numeral | 𓆼𓍧𓎉𓏺 |
| 1641 in Babylonian Numeral |   |
Roots and stuff for 1641
| Is 1641 a square number? | 1641 is NOT a square number |
| Is 1641 a cube number? | 1641 is NOT a cube number |
| Square root of the number 1641 | 40.509258201058 |
| Cube root of the number 1641 | 11.795133490712 |
Recreational math for 1641
| Number 1641 reversed | 1461 |
| Sum of the digits | 12 |
| No of digits | 4 |