Prime Factorization |
11 x 181 |
Divisors |
1, 11, 181, 1991 |
Count of divisors |
4 |
Sum of divisors |
2184 |
Previous integer |
1990 |
Next integer |
1992 |
Is prime? |
NO |
Previous prime |
1987 |
Next prime |
1993 |
1991st prime number |
↻ calculating, please wait |
Is a Fibonacci number? |
NO |
Zeckendorf representation |
1597 + 377 + 13 + 3 + 1 |
Is a Pell number? |
NO |
Is a regular number? |
NO |
Is a perfect number? |
NO |
Is a perfect square number? |
NO |
Is a perfect cube number? |
NO |
Is power of 2? |
NO |
Is power of 3? |
NO |
Square 19912 |
3964081 |
Square root √1991 |
44.620623034646 |
Cube 19913 |
7892485271 |
Cubic root ∛1991 |
12.580283263893 |
Natural logarithm |
7.5963923040642 |
Decimal logarithm |
3.2990712600274 |