189979468 has 24 divisors (see below), whose sum is σ = 387716000. Its totient is φ = 81419184.

The previous prime is 189979451. The next prime is 189979481. The reversal of 189979468 is 864979981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67863 + ... + 70606.

Almost surely, 2^189979468 is an apocalyptic number.

It is an amenable number.

189979468 is an abundant number, since it is smaller than the sum of its proper divisors (197736532).

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

189979468 is a wasteful number, since it uses less digits than its factorization.

189979468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138494 (or 138478 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 61.

The square root of 189979468 is about 13783.3039580501. The cubic root of 189979468 is about 574.8689990161.

The spelling of 189979468 in words is "one hundred eighty-nine million, nine hundred seventy-nine thousand, four hundred sixty-eight".