165316956 has 24 divisors (see below), whose sum is σ = 440845440. Its totient is φ = 47233392.

The previous prime is 165316937. The next prime is 165316969. The reversal of 165316956 is 659613561.

165316956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165316956² = 54659391882211872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983946 + ... + 984113.

It is an arithmetic number, because the mean of its divisors is an integer number (18368560).

Almost surely, 2^165316956 is an apocalyptic number.

It is an amenable number.

165316956 is an abundant number, since it is smaller than the sum of its proper divisors (275528484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165316956 is a wasteful number, since it uses less digits than its factorization.

165316956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968073 (or 1968071 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 165316956 is about 12857.5641550023. The cubic root of 165316956 is about 548.8316310778.

The spelling of 165316956 in words is "one hundred sixty-five million, three hundred sixteen thousand, nine hundred fifty-six".