165309113 has 2 divisors, whose sum is σ = 165309114. Its totient is φ = 165309112.

The previous prime is 165309083. The next prime is 165309121. The reversal of 165309113 is 311903561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157452304 + 7856809 = 12548^2 + 2803^2 .

It is a cyclic number.

It is not a de Polignac number, because 165309113 - 2²⁴ = 148531897 is a prime.

It is not a weakly prime, because it can be changed into another prime (165309713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82654556 + 82654557.

It is an arithmetic number, because the mean of its divisors is an integer number (82654557).

Almost surely, 2^165309113 is an apocalyptic number.

It is an amenable number.

165309113 is a deficient number, since it is larger than the sum of its proper divisors (1).

165309113 is an equidigital number, since it uses as much as digits as its factorization.

165309113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 165309113 is about 12857.2591558232. The cubic root of 165309113 is about 548.8229516807.

The spelling of 165309113 in words is "one hundred sixty-five million, three hundred nine thousand, one hundred thirteen".