864513892 has 48 divisors (see below), whose sum is σ = 1687633920. Its totient is φ = 384199200.

The previous prime is 864513877. The next prime is 864513893. The reversal of 864513892 is 298315468.

It is not an unprimeable number, because it can be changed into a prime (864513893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395659 + ... + 397837.

It is an arithmetic number, because the mean of its divisors is an integer number (35159040).

Almost surely, 2^864513892 is an apocalyptic number.

It is an amenable number.

864513892 is a deficient number, since it is larger than the sum of its proper divisors (823120028).

864513892 is a wasteful number, since it uses less digits than its factorization.

864513892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 864513892 is about 29402.6170944016. The cubic root of 864513892 is about 952.6294253992.

The spelling of 864513892 in words is "eight hundred sixty-four million, five hundred thirteen thousand, eight hundred ninety-two".