165788113 has 2 divisors, whose sum is σ = 165788114. Its totient is φ = 165788112.

The previous prime is 165788059. The next prime is 165788123. The reversal of 165788113 is 311887561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165714129 + 73984 = 12873^2 + 272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165788113 is a prime.

It is not a weakly prime, because it can be changed into another prime (165788123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82894056 + 82894057.

It is an arithmetic number, because the mean of its divisors is an integer number (82894057).

Almost surely, 2^165788113 is an apocalyptic number.

It is an amenable number.

165788113 is a deficient number, since it is larger than the sum of its proper divisors (1).

165788113 is an equidigital number, since it uses as much as digits as its factorization.

165788113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 165788113 is about 12875.8732907714. The cubic root of 165788113 is about 549.3525306492.

The spelling of 165788113 in words is "one hundred sixty-five million, seven hundred eighty-eight thousand, one hundred thirteen".