161200164 has 24 divisors (see below), whose sum is σ = 376358080. Its totient is φ = 53701344.

The previous prime is 161200153. The next prime is 161200181. The reversal of 161200164 is 461002161.

It is a self number, because there is not a number n which added to its sum of digits gives 161200164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25857 + ... + 31479.

Almost surely, 2^161200164 is an apocalyptic number.

It is an amenable number.

161200164 is an abundant number, since it is smaller than the sum of its proper divisors (215157916).

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

161200164 is a wasteful number, since it uses less digits than its factorization.

161200164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 161200164 is about 12696.4626569765. The cubic root of 161200164 is about 544.2375377360.

The spelling of 161200164 in words is "one hundred sixty-one million, two hundred thousand, one hundred sixty-four".