188164940 has 24 divisors (see below), whose sum is σ = 395923920. Its totient is φ = 75117888.

The previous prime is 188164871. The next prime is 188164969. The reversal of 188164940 is 49461881.

188164940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (16496830).

Almost surely, 2^188164940 is an apocalyptic number.

188164940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188164940 is an abundant number, since it is smaller than the sum of its proper divisors (207758980).

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

188164940 is a wasteful number, since it uses less digits than its factorization.

188164940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18521 (or 18519 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 188164940 is about 13717.3226250606. The cubic root of 188164940 is about 573.0329152949.

The spelling of 188164940 in words is "one hundred eighty-eight million, one hundred sixty-four thousand, nine hundred forty".