864188164 has 12 divisors (see below), whose sum is σ = 1728376384. Its totient is φ = 370366344.

The previous prime is 864188141. The next prime is 864188167. The reversal of 864188164 is 461881468.

864188164 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (864188167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15431904 + ... + 15431959.

Almost surely, 2^864188164 is an apocalyptic number.

It is an amenable number.

864188164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

864188164 is a wasteful number, since it uses less digits than its factorization.

864188164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30863874 (or 30863872 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 864188164 is about 29397.0774737898. The cubic root of 864188164 is about 952.5097677668.

The spelling of 864188164 in words is "eight hundred sixty-four million, one hundred eighty-eight thousand, one hundred sixty-four".