189885568 has 32 divisors (see below), whose sum is σ = 379048320. Its totient is φ = 94752000.

The previous prime is 189885557. The next prime is 189885569. The reversal of 189885568 is 865588981.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (189885569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79593 + ... + 81943.

It is an arithmetic number, because the mean of its divisors is an integer number (11845260).

Almost surely, 2^189885568 is an apocalyptic number.

It is an amenable number.

189885568 is a deficient number, since it is larger than the sum of its proper divisors (189162752).

189885568 is an equidigital number, since it uses as much as digits as its factorization.

189885568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2984 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 58.

The square root of 189885568 is about 13779.8972419971. The cubic root of 189885568 is about 574.7742710691.

The spelling of 189885568 in words is "one hundred eighty-nine million, eight hundred eighty-five thousand, five hundred sixty-eight".