Names of 1
| Nominal | 1 |
| Cardinal | one |
| Ordinal | 1st |
| This number as US currency | one dollar |
| Is 1 an odd number? | 1 is an odd number |
| Is 1 an even number? | 1 is NOT an even number |
| Is 1 a palindrome? | 1 is a palindrome number |
| Is 1 a triangle number? | 1 is a triangle number |
| Factorial (n!) of number 1! | 1 |
1 in other Bases
| Base 2 (Binary) | 12 |
| Base 3 (Ternary) | 13 |
| Base 4 (Quaternary) | 14 |
| Base 5 (Quinary) | 15 |
| Base 6 (Senary) | 16 |
| Base 8 (Octal) | 18 |
| Base 12 (Duodecimal) | 112 |
| Base 16 (Hexadecimal) | 116 |
| Base 20 (Vigesimal) | 120 |
Primes and Factors tests for 1
| Is 1 a Prime Number? | 1 is NOT a prime |
| Is 1 a perfect number? | 1 is NOT a perfect number |
| Is 1 a Mersenne Prime? | 1 is NOT a Mersenne prime |
| Is 1 a Fermat Prime? | 1 is NOT a Fermat prime |
| Is 1 a Fibonacci Prime? | 1 is NOT a Fibonacci prime |
| Is 1 a Partition Prime? | 1 is NOT a Partition prime |
| Is 1 a Pell Prime? | 1 is NOT a Pell prime |
| Prime Factors | Prime factors of 1 |
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1 in other Numerals
| 1 in Roman Numeral | I |
| 1 in Chinese Numeral | 壹 |
| 1 in Egyptian Numeral | 𓏺 |
| 1 in Babylonian Numeral |  |
Roots and stuff for 1
| Is 1 a square number? | 1 is a square number |
| Is 1 a cube number? | 1 is a cube number |
| Square root of the number 1 | 1 |
| Cube root of the number 1 | 1 |
Recreational math for 1
| Number 1 reversed | 1 |
| Sum of the digits | 1 |
| No of digits | 1 |