189361164256 has 24 divisors (see below), whose sum is σ = 406696137624. Its totient is φ = 86073256320.

The previous prime is 189361164217. The next prime is 189361164263. The reversal of 189361164256 is 652461163981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268978575 + ... + 268979278.

It is an arithmetic number, because the mean of its divisors is an integer number (16945672401).

Almost surely, 2^189361164256 is an apocalyptic number.

189361164256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189361164256 is an abundant number, since it is smaller than the sum of its proper divisors (217334973368).

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

189361164256 is a wasteful number, since it uses less digits than its factorization.

189361164256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537957874 (or 537957866 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The spelling of 189361164256 in words is "one hundred eighty-nine billion, three hundred sixty-one million, one hundred sixty-four thousand, two hundred fifty-six".