189313884 has 36 divisors (see below), whose sum is σ = 479232936. Its totient is φ = 63013728.

The previous prime is 189313849. The next prime is 189313909. The reversal of 189313884 is 488313981.

189313884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24427 + ... + 31229.

It is an arithmetic number, because the mean of its divisors is an integer number (13312026).

Almost surely, 2^189313884 is an apocalyptic number.

It is an amenable number.

189313884 is an abundant number, since it is smaller than the sum of its proper divisors (289919052).

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

189313884 is a wasteful number, since it uses less digits than its factorization.

189313884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7586 (or 7581 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 189313884 is about 13759.1381997566. The cubic root of 189313884 is about 574.1968714468.

The spelling of 189313884 in words is "one hundred eighty-nine million, three hundred thirteen thousand, eight hundred eighty-four".