189242564 has 24 divisors (see below), whose sum is σ = 378920640. Its totient is φ = 81010656.

The previous prime is 189242549. The next prime is 189242587. The reversal of 189242564 is 465242981.

189242564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 24527 + ... + 31305.

It is an arithmetic number, because the mean of its divisors is an integer number (15788360).

Almost surely, 2^189242564 is an apocalyptic number.

189242564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189242564 is an abundant number, since it is smaller than the sum of its proper divisors (189678076).

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

189242564 is a wasteful number, since it uses less digits than its factorization.

189242564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7787 (or 7785 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 189242564 is about 13756.5462235257. The cubic root of 189242564 is about 574.1247568830.

The spelling of 189242564 in words is "one hundred eighty-nine million, two hundred forty-two thousand, five hundred sixty-four".