189715924 has 6 divisors (see below), whose sum is σ = 332002874. Its totient is φ = 94857960.

The previous prime is 189715913. The next prime is 189715943. The reversal of 189715924 is 429517981.

It can be written as a sum of positive squares in only one way, i.e., 177688900 + 12027024 = 13330^2 + 3468^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23714487 + ... + 23714494.

Almost surely, 2^189715924 is an apocalyptic number.

It is an amenable number.

189715924 is a deficient number, since it is larger than the sum of its proper divisors (142286950).

189715924 is a wasteful number, since it uses less digits than its factorization.

189715924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47428985 (or 47428983 counting only the distinct ones).

The product of its digits is 181440, while the sum is 46.

The square root of 189715924 is about 13773.7403779801. The cubic root of 189715924 is about 574.6030520563.

The spelling of 189715924 in words is "one hundred eighty-nine million, seven hundred fifteen thousand, nine hundred twenty-four".