189519388 has 12 divisors (see below), whose sum is σ = 336202720. Its totient is φ = 93461472.

The previous prime is 189519353. The next prime is 189519397. The reversal of 189519388 is 883915981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324228 + ... + 324811.

Almost surely, 2^189519388 is an apocalyptic number.

It is an amenable number.

189519388 is a deficient number, since it is larger than the sum of its proper divisors (146683332).

189519388 is a wasteful number, since it uses less digits than its factorization.

189519388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649116 (or 649114 counting only the distinct ones).

The product of its digits is 622080, while the sum is 52.

The square root of 189519388 is about 13766.6040837964. The cubic root of 189519388 is about 574.4045637021.

The spelling of 189519388 in words is "one hundred eighty-nine million, five hundred nineteen thousand, three hundred eighty-eight".