189808168 has 32 divisors (see below), whose sum is σ = 388776960. Its totient is φ = 86158080.

The previous prime is 189808153. The next prime is 189808181. The reversal of 189808168 is 861808981.

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, 113305 + ... + 114967.

It is an arithmetic number, because the mean of its divisors is an integer number (12149280).

Almost surely, 2^189808168 is an apocalyptic number.

It is an amenable number.

189808168 is an abundant number, since it is smaller than the sum of its proper divisors (198968792).

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

189808168 is a wasteful number, since it uses less digits than its factorization.

189808168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 49.

The square root of 189808168 is about 13777.0885168093. The cubic root of 189808168 is about 574.6961651252.

The spelling of 189808168 in words is "one hundred eighty-nine million, eight hundred eight thousand, one hundred sixty-eight".