165123264 has 56 divisors (see below), whose sum is σ = 437865520. Its totient is φ = 54918144.

The previous prime is 165123263. The next prime is 165123269. The reversal of 165123264 is 462321561.

It is not an unprimeable number, because it can be changed into a prime (165123263) by changing a digit.

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, 135522 + ... + 136734.

Almost surely, 2^165123264 is an apocalyptic number.

It is an amenable number.

165123264 is an abundant number, since it is smaller than the sum of its proper divisors (272742256).

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

165123264 is a wasteful number, since it uses less digits than its factorization.

165123264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937 (or 1927 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 165123264 is about 12850.0297275921. The cubic root of 165123264 is about 548.6172029016.

The spelling of 165123264 in words is "one hundred sixty-five million, one hundred twenty-three thousand, two hundred sixty-four".