189521924 has 12 divisors (see below), whose sum is σ = 337285200. Its totient is φ = 93154728.

The previous prime is 189521911. The next prime is 189521939. The reversal of 189521924 is 429125981.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401294 + ... + 401765.

It is an arithmetic number, because the mean of its divisors is an integer number (28107100).

Almost surely, 2^189521924 is an apocalyptic number.

It is an amenable number.

189521924 is a deficient number, since it is larger than the sum of its proper divisors (147763276).

189521924 is a wasteful number, since it uses less digits than its factorization.

189521924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803122 (or 803120 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 189521924 is about 13766.6961904445. The cubic root of 189521924 is about 574.4071257680.

The spelling of 189521924 in words is "one hundred eighty-nine million, five hundred twenty-one thousand, nine hundred twenty-four".