165672156 has 24 divisors (see below), whose sum is σ = 416304784. Its totient is φ = 50976000.

The previous prime is 165672149. The next prime is 165672167. The reversal of 165672156 is 651276561.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 530845 + ... + 531156.

Almost surely, 2^165672156 is an apocalyptic number.

It is an amenable number.

165672156 is an abundant number, since it is smaller than the sum of its proper divisors (250632628).

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

165672156 is a wasteful number, since it uses less digits than its factorization.

165672156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062021 (or 1062019 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 165672156 is about 12871.3696240921. The cubic root of 165672156 is about 549.2244230956.

The spelling of 165672156 in words is "one hundred sixty-five million, six hundred seventy-two thousand, one hundred fifty-six".