165218232 has 16 divisors (see below), whose sum is σ = 413045640. Its totient is φ = 55072736.

The previous prime is 165218201. The next prime is 165218293. The reversal of 165218232 is 232812561.

165218232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165218232.

It is a congruent number.

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, 3442023 + ... + 3442070.

Almost surely, 2^165218232 is an apocalyptic number.

165218232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165218232 is an abundant number, since it is smaller than the sum of its proper divisors (247827408).

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

165218232 is a wasteful number, since it uses less digits than its factorization.

165218232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884102 (or 6884098 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 165218232 is about 12853.7244407993. The cubic root of 165218232 is about 548.7223588764.

It can be divided in two parts, 16521 and 8232, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 165218232 in words is "one hundred sixty-five million, two hundred eighteen thousand, two hundred thirty-two".