188808940 has 12 divisors (see below), whose sum is σ = 396498816. Its totient is φ = 75523568.

The previous prime is 188808929. The next prime is 188808943. The reversal of 188808940 is 49808881.

It is not an unprimeable number, because it can be changed into a prime (188808943) 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, 4720204 + ... + 4720243.

It is an arithmetic number, because the mean of its divisors is an integer number (33041568).

Almost surely, 2^188808940 is an apocalyptic number.

188808940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188808940 is an abundant number, since it is smaller than the sum of its proper divisors (207689876).

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

188808940 is a wasteful number, since it uses less digits than its factorization.

188808940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440456 (or 9440454 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 188808940 is about 13740.7765428305. The cubic root of 188808940 is about 573.6859115211.

The spelling of 188808940 in words is "one hundred eighty-eight million, eight hundred eight thousand, nine hundred forty".