188349972 has 12 divisors (see below), whose sum is σ = 439483296. Its totient is φ = 62783320.

The previous prime is 188349971. The next prime is 188349979. The reversal of 188349972 is 279943881.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188349971) 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, 7847904 + ... + 7847927.

It is an arithmetic number, because the mean of its divisors is an integer number (36623608).

Almost surely, 2^188349972 is an apocalyptic number.

188349972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188349972 is an abundant number, since it is smaller than the sum of its proper divisors (251133324).

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

188349972 is a wasteful number, since it uses less digits than its factorization.

188349972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695838 (or 15695836 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 188349972 is about 13724.0654326624. The cubic root of 188349972 is about 573.2206844062.

The spelling of 188349972 in words is "one hundred eighty-eight million, three hundred forty-nine thousand, nine hundred seventy-two".