189258664 has 16 divisors (see below), whose sum is σ = 405554400. Its totient is φ = 81110832.

The previous prime is 189258659. The next prime is 189258673. The reversal of 189258664 is 466852981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689754 + ... + 1689865.

It is an arithmetic number, because the mean of its divisors is an integer number (25347150).

Almost surely, 2^189258664 is an apocalyptic number.

189258664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189258664 is an abundant number, since it is smaller than the sum of its proper divisors (216295736).

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

189258664 is a wasteful number, since it uses less digits than its factorization.

189258664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379632 (or 3379628 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 189258664 is about 13757.1313870298. The cubic root of 189258664 is about 574.1410378335.

The spelling of 189258664 in words is "one hundred eighty-nine million, two hundred fifty-eight thousand, six hundred sixty-four".