188938020 has 48 divisors (see below), whose sum is σ = 529925760. Its totient is φ = 50297856.

The previous prime is 188938019. The next prime is 188938037. The reversal of 188938020 is 20839881.

188938020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 188938020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38041 + ... + 42719.

It is an arithmetic number, because the mean of its divisors is an integer number (11040120).

Almost surely, 2^188938020 is an apocalyptic number.

188938020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188938020 is an abundant number, since it is smaller than the sum of its proper divisors (340987740).

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

188938020 is a wasteful number, since it uses less digits than its factorization.

188938020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 188938020 is about 13745.4727092232. The cubic root of 188938020 is about 573.8166159759.

The spelling of 188938020 in words is "one hundred eighty-eight million, nine hundred thirty-eight thousand, twenty".