189256164 has 48 divisors (see below), whose sum is σ = 454876800. Its totient is φ = 61205760.

The previous prime is 189256159. The next prime is 189256183. The reversal of 189256164 is 461652981.

It is a super-2 number, since 2×189256164² = 71635791223989792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96942 + ... + 98874.

It is an arithmetic number, because the mean of its divisors is an integer number (9476600).

Almost surely, 2^189256164 is an apocalyptic number.

It is an amenable number.

189256164 is an abundant number, since it is smaller than the sum of its proper divisors (265620636).

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

189256164 is a wasteful number, since it uses less digits than its factorization.

189256164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2178 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 189256164 is about 13757.0405247640. The cubic root of 189256164 is about 574.1385097962.

It can be divided in two parts, 189256 and 164, that added together give a triangular number (189420 = T₆₁₅).

The spelling of 189256164 in words is "one hundred eighty-nine million, two hundred fifty-six thousand, one hundred sixty-four".