165320508 has 24 divisors (see below), whose sum is σ = 386076880. Its totient is φ = 55059840.

The previous prime is 165320483. The next prime is 165320543. The reversal of 165320508 is 805023561.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 10638 + ... + 21066.

Almost surely, 2^165320508 is an apocalyptic number.

It is an amenable number.

165320508 is an abundant number, since it is smaller than the sum of its proper divisors (220756372).

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

165320508 is a wasteful number, since it uses less digits than its factorization.

165320508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11757 (or 11755 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 165320508 is about 12857.7022830675. The cubic root of 165320508 is about 548.8355617817.

The spelling of 165320508 in words is "one hundred sixty-five million, three hundred twenty thousand, five hundred eight".