864845618 has 32 divisors (see below), whose sum is σ = 1598171904. Its totient is φ = 341808192.

The previous prime is 864845561. The next prime is 864845623. The reversal of 864845618 is 816548468.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 290996 + ... + 293952.

It is an arithmetic number, because the mean of its divisors is an integer number (49942872).

Almost surely, 2^864845618 is an apocalyptic number.

864845618 is a deficient number, since it is larger than the sum of its proper divisors (733326286).

864845618 is a wasteful number, since it uses less digits than its factorization.

864845618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586.

The product of its digits is 1474560, while the sum is 50.

The square root of 864845618 is about 29408.2576498507. The cubic root of 864845618 is about 952.7512555363.

The spelling of 864845618 in words is "eight hundred sixty-four million, eight hundred forty-five thousand, six hundred eighteen".