161179864 has 8 divisors (see below), whose sum is σ = 302212260. Its totient is φ = 80589928.

The previous prime is 161179861. The next prime is 161179919. The reversal of 161179864 is 468971161.

161179864 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161179864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161179861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073734 + ... + 10073749.

Almost surely, 2^161179864 is an apocalyptic number.

It is an amenable number.

161179864 is a deficient number, since it is larger than the sum of its proper divisors (141032396).

161179864 is a wasteful number, since it uses less digits than its factorization.

161179864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20147489 (or 20147485 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 161179864 is about 12695.6631965408. The cubic root of 161179864 is about 544.2146914280.

The spelling of 161179864 in words is "one hundred sixty-one million, one hundred seventy-nine thousand, eight hundred sixty-four".