189665268 has 48 divisors (see below), whose sum is σ = 497325696. Its totient is φ = 55820160.

The previous prime is 189665261. The next prime is 189665269. The reversal of 189665268 is 862566981.

It is a self number, because there is not a number n which added to its sum of digits gives 189665268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189665261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22843 + ... + 30018.

It is an arithmetic number, because the mean of its divisors is an integer number (10360952).

Almost surely, 2^189665268 is an apocalyptic number.

It is an amenable number.

189665268 is an abundant number, since it is smaller than the sum of its proper divisors (307660428).

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

189665268 is a wasteful number, since it uses less digits than its factorization.

189665268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52904 (or 52902 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 189665268 is about 13771.9013937800. The cubic root of 189665268 is about 574.5519059662.

The spelling of 189665268 in words is "one hundred eighty-nine million, six hundred sixty-five thousand, two hundred sixty-eight".