189163268 has 24 divisors (see below), whose sum is σ = 379180032. Its totient is φ = 80887104.

The previous prime is 189163223. The next prime is 189163291. The reversal of 189163268 is 862361981.

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, 5405 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (15799168).

Almost surely, 2^189163268 is an apocalyptic number.

It is an amenable number.

189163268 is an abundant number, since it is smaller than the sum of its proper divisors (190016764).

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

189163268 is a wasteful number, since it uses less digits than its factorization.

189163268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15251 (or 15249 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 189163268 is about 13753.6638027836. The cubic root of 189163268 is about 574.0445561855.

The spelling of 189163268 in words is "one hundred eighty-nine million, one hundred sixty-three thousand, two hundred sixty-eight".