165878532 has 36 divisors (see below), whose sum is σ = 420050176. Its totient is φ = 55194480.

The previous prime is 165878527. The next prime is 165878543. The reversal of 165878532 is 235878561.

165878532 is a `hidden beast` number, since 16 + 587 + 8 + 53 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18057 + ... + 25647.

Almost surely, 2^165878532 is an apocalyptic number.

165878532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165878532 is an abundant number, since it is smaller than the sum of its proper divisors (254171644).

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

165878532 is a wasteful number, since it uses less digits than its factorization.

165878532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208 (or 8203 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 165878532 is about 12879.3839914803. The cubic root of 165878532 is about 549.4523827598.

The spelling of 165878532 in words is "one hundred sixty-five million, eight hundred seventy-eight thousand, five hundred thirty-two".