165173964 has 12 divisors (see below), whose sum is σ = 385405944. Its totient is φ = 55057984.

The previous prime is 165173959. The next prime is 165173977. The reversal of 165173964 is 469371561.

165173964 = 4280² + 4281² + ... + 4288².

165173964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6882237 + ... + 6882260.

It is an arithmetic number, because the mean of its divisors is an integer number (32117162).

Almost surely, 2^165173964 is an apocalyptic number.

It is an amenable number.

165173964 is an abundant number, since it is smaller than the sum of its proper divisors (220231980).

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

165173964 is a wasteful number, since it uses less digits than its factorization.

165173964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13764504 (or 13764502 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 165173964 is about 12852.0023342668. The cubic root of 165173964 is about 548.6733469102.

The spelling of 165173964 in words is "one hundred sixty-five million, one hundred seventy-three thousand, nine hundred sixty-four".