188743972 has 12 divisors (see below), whose sum is σ = 330445836. Its totient is φ = 94330880.

The previous prime is 188743969. The next prime is 188743999. The reversal of 188743972 is 279347881.

It can be written as a sum of positive squares in 2 ways, for example, as 13075456 + 175668516 = 3616^2 + 13254^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572 + ... + 19492.

It is an arithmetic number, because the mean of its divisors is an integer number (27537153).

Almost surely, 2^188743972 is an apocalyptic number.

It is an amenable number.

188743972 is a deficient number, since it is larger than the sum of its proper divisors (141701864).

188743972 is a wasteful number, since it uses less digits than its factorization.

188743972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20558 (or 20556 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 188743972 is about 13738.4122809006. The cubic root of 188743972 is about 573.6201033695.

The spelling of 188743972 in words is "one hundred eighty-eight million, seven hundred forty-three thousand, nine hundred seventy-two".