188831980320 has 96 divisors (see below), whose sum is σ = 626127122880. Its totient is φ = 47704919040.

The previous prime is 188831980303. The next prime is 188831980321. The reversal of 188831980320 is 23089138881.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (188831980321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10343511 + ... + 10361750.

It is an arithmetic number, because the mean of its divisors is an integer number (6522157530).

Almost surely, 2^188831980320 is an apocalyptic number.

188831980320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188831980320 is an abundant number, since it is smaller than the sum of its proper divisors (437295142560).

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

188831980320 is a wasteful number, since it uses less digits than its factorization.

188831980320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20705298 (or 20705290 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 188831980320 in words is "one hundred eighty-eight billion, eight hundred thirty-one million, nine hundred eighty thousand, three hundred twenty".