165909332 has 24 divisors (see below), whose sum is σ = 298835040. Its totient is φ = 80537760.

The previous prime is 165909313. The next prime is 165909379. The reversal of 165909332 is 233909561.

165909332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 90707 + ... + 92517.

It is an arithmetic number, because the mean of its divisors is an integer number (12451460).

Almost surely, 2^165909332 is an apocalyptic number.

It is an amenable number.

165909332 is a deficient number, since it is larger than the sum of its proper divisors (132925708).

165909332 is a wasteful number, since it uses less digits than its factorization.

165909332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 165909332 is about 12880.5796453421. The cubic root of 165909332 is about 549.4863877350.

The spelling of 165909332 in words is "one hundred sixty-five million, nine hundred nine thousand, three hundred thirty-two".