189564168 has 32 divisors (see below), whose sum is σ = 481946400. Its totient is φ = 62116608.

The previous prime is 189564157. The next prime is 189564181. The reversal of 189564168 is 861465981.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 65521 + ... + 68352.

It is an arithmetic number, because the mean of its divisors is an integer number (15060825).

Almost surely, 2^189564168 is an apocalyptic number.

It is an amenable number.

189564168 is an abundant number, since it is smaller than the sum of its proper divisors (292382232).

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

189564168 is a wasteful number, since it uses less digits than its factorization.

189564168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133941 (or 133937 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 189564168 is about 13768.2303873809. The cubic root of 189564168 is about 574.4498006056.

The spelling of 189564168 in words is "one hundred eighty-nine million, five hundred sixty-four thousand, one hundred sixty-eight".