189179688156 has 24 divisors (see below), whose sum is σ = 450811173120. Its totient is φ = 61718195952.

The previous prime is 189179688083. The next prime is 189179688179. The reversal of 189179688156 is 651886971981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167711926 + ... + 167713053.

It is an arithmetic number, because the mean of its divisors is an integer number (18783798880).

Almost surely, 2^189179688156 is an apocalyptic number.

It is an amenable number.

189179688156 is an abundant number, since it is smaller than the sum of its proper divisors (261631484964).

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

189179688156 is a wasteful number, since it uses less digits than its factorization.

189179688156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335425033 (or 335425031 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 69.

The spelling of 189179688156 in words is "one hundred eighty-nine billion, one hundred seventy-nine million, six hundred eighty-eight thousand, one hundred fifty-six".