165645112 has 8 divisors (see below), whose sum is σ = 310584600. Its totient is φ = 82822552.

The previous prime is 165645107. The next prime is 165645133. The reversal of 165645112 is 211546561.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10352812 + ... + 10352827.

It is an arithmetic number, because the mean of its divisors is an integer number (38823075).

Almost surely, 2^165645112 is an apocalyptic number.

It is an amenable number.

165645112 is a deficient number, since it is larger than the sum of its proper divisors (144939488).

165645112 is a wasteful number, since it uses less digits than its factorization.

165645112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20705645 (or 20705641 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 165645112 is about 12870.3190325648. The cubic root of 165645112 is about 549.1945366944.

The spelling of 165645112 in words is "one hundred sixty-five million, six hundred forty-five thousand, one hundred twelve".