189280168 has 32 divisors (see below), whose sum is σ = 442474560. Its totient is φ = 73745280.

The previous prime is 189280153. The next prime is 189280171. The reversal of 189280168 is 861082981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153021 + ... + 154252.

It is an arithmetic number, because the mean of its divisors is an integer number (13827330).

Almost surely, 2^189280168 is an apocalyptic number.

It is an amenable number.

189280168 is an abundant number, since it is smaller than the sum of its proper divisors (253194392).

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

189280168 is a wasteful number, since it uses less digits than its factorization.

189280168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307297 (or 307293 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 189280168 is about 13757.9129231145. The cubic root of 189280168 is about 574.1627820804.

The spelling of 189280168 in words is "one hundred eighty-nine million, two hundred eighty thousand, one hundred sixty-eight".