189039918880 has 24 divisors (see below), whose sum is σ = 446606808732. Its totient is φ = 75615967488.

The previous prime is 189039918829. The next prime is 189039918883. The reversal of 189039918880 is 88819930981.

189039918880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 166859178256 + 22180740624 = 408484^2 + 148932^2 .

It is a Smith number, since the sum of its digits (64) 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 (189039918883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590749587 + ... + 590749906.

Almost surely, 2^189039918880 is an apocalyptic number.

189039918880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189039918880 is an abundant number, since it is smaller than the sum of its proper divisors (257566889852).

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

189039918880 is a wasteful number, since it uses less digits than its factorization.

189039918880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181499508 (or 1181499500 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 64.

The spelling of 189039918880 in words is "one hundred eighty-nine billion, thirty-nine million, nine hundred eighteen thousand, eight hundred eighty".