113615993 has 2 divisors, whose sum is σ = 113615994. Its totient is φ = 113615992.

The previous prime is 113615989. The next prime is 113616001. The reversal of 113615993 is 399516311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104693824 + 8922169 = 10232^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 113615993 - 2² = 113615989 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (113615393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56807996 + 56807997.

It is an arithmetic number, because the mean of its divisors is an integer number (56807997).

Almost surely, 2^113615993 is an apocalyptic number.

It is an amenable number.

113615993 is a deficient number, since it is larger than the sum of its proper divisors (1).

113615993 is an equidigital number, since it uses as much as digits as its factorization.

113615993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 113615993 is about 10659.0803074186. The cubic root of 113615993 is about 484.3357086852.

The spelling of 113615993 in words is "one hundred thirteen million, six hundred fifteen thousand, nine hundred ninety-three".