188390133882 has 40 divisors (see below), whose sum is σ = 423899784000. Its totient is φ = 62533950696.

The previous prime is 188390133847. The next prime is 188390133907. The reversal of 188390133882 is 288331093881.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2394132 + ... + 2471567.

It is an arithmetic number, because the mean of its divisors is an integer number (10597494600).

Almost surely, 2^188390133882 is an apocalyptic number.

188390133882 is an abundant number, since it is smaller than the sum of its proper divisors (235509650118).

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

188390133882 is a wasteful number, since it uses less digits than its factorization.

188390133882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865952 (or 4865943 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 188390133882 in words is "one hundred eighty-eight billion, three hundred ninety million, one hundred thirty-three thousand, eight hundred eighty-two".