165180975 has 12 divisors (see below), whose sum is σ = 273099336. Its totient is φ = 88096480.

The previous prime is 165180971. The next prime is 165180991. The reversal of 165180975 is 579081561.

It is not a de Polignac number, because 165180975 - 2² = 165180971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165180971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1101132 + ... + 1101281.

It is an arithmetic number, because the mean of its divisors is an integer number (22758278).

Almost surely, 2^165180975 is an apocalyptic number.

165180975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165180975 is a deficient number, since it is larger than the sum of its proper divisors (107918361).

165180975 is a wasteful number, since it uses less digits than its factorization.

165180975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202426 (or 2202421 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 165180975 is about 12852.2750904266. The cubic root of 165180975 is about 548.6811098254.

The spelling of 165180975 in words is "one hundred sixty-five million, one hundred eighty thousand, nine hundred seventy-five".