189574918 has 16 divisors (see below), whose sum is σ = 306539856. Its totient is φ = 87409440.

The previous prime is 189574883. The next prime is 189574933. The reversal of 189574918 is 819475981.

189574918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 28533 + ... + 34543.

It is an arithmetic number, because the mean of its divisors is an integer number (19158741).

Almost surely, 2^189574918 is an apocalyptic number.

189574918 is a deficient number, since it is larger than the sum of its proper divisors (116964938).

189574918 is a wasteful number, since it uses less digits than its factorization.

189574918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239.

The product of its digits is 725760, while the sum is 52.

The square root of 189574918 is about 13768.6207733382. The cubic root of 189574918 is about 574.4606592305.

The spelling of 189574918 in words is "one hundred eighty-nine million, five hundred seventy-four thousand, nine hundred eighteen".