864295218 has 32 divisors (see below), whose sum is σ = 2021745600. Its totient is φ = 272935008.

The previous prime is 864295171. The next prime is 864295241. The reversal of 864295218 is 812592468.

864295218 is a `hidden beast` number, since 8 + 6 + 429 + 5 + 218 = 666.

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, 420171 + ... + 422222.

It is an arithmetic number, because the mean of its divisors is an integer number (63179550).

Almost surely, 2^864295218 is an apocalyptic number.

864295218 is an abundant number, since it is smaller than the sum of its proper divisors (1157450382).

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

864295218 is a wasteful number, since it uses less digits than its factorization.

864295218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842423 (or 842417 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 864295218 is about 29398.8982446622. The cubic root of 864295218 is about 952.5490978473.

The spelling of 864295218 in words is "eight hundred sixty-four million, two hundred ninety-five thousand, two hundred eighteen".