165957756 has 24 divisors (see below), whose sum is σ = 399727104. Its totient is φ = 53534640.

The previous prime is 165957739. The next prime is 165957763. The reversal of 165957756 is 657759561.

165957756 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 165957699 and 165957708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222690 + ... + 223433.

It is an arithmetic number, because the mean of its divisors is an integer number (16655296).

Almost surely, 2^165957756 is an apocalyptic number.

It is an amenable number.

165957756 is an abundant number, since it is smaller than the sum of its proper divisors (233769348).

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

165957756 is a wasteful number, since it uses less digits than its factorization.

165957756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446161 (or 446159 counting only the distinct ones).

The product of its digits is 1984500, while the sum is 51.

The square root of 165957756 is about 12882.4592372730. The cubic root of 165957756 is about 549.5398421132.

The spelling of 165957756 in words is "one hundred sixty-five million, nine hundred fifty-seven thousand, seven hundred fifty-six".