165609132 has 24 divisors (see below), whose sum is σ = 416146416. Its totient is φ = 50956608.

The previous prime is 165609113. The next prime is 165609163. The reversal of 165609132 is 231906561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 165609093 and 165609102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530643 + ... + 530954.

It is an arithmetic number, because the mean of its divisors is an integer number (17339434).

Almost surely, 2^165609132 is an apocalyptic number.

165609132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165609132 is an abundant number, since it is smaller than the sum of its proper divisors (250537284).

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

165609132 is a wasteful number, since it uses less digits than its factorization.

165609132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061617 (or 1061615 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 165609132 is about 12868.9211669044. The cubic root of 165609132 is about 549.1547700510.

The spelling of 165609132 in words is "one hundred sixty-five million, six hundred nine thousand, one hundred thirty-two".