861418504 has 32 divisors (see below), whose sum is σ = 1701604800. Its totient is φ = 407695680.

The previous prime is 861418477. The next prime is 861418507. The reversal of 861418504 is 405814168.

It is not an unprimeable number, because it can be changed into a prime (861418507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324109 + ... + 326755.

It is an arithmetic number, because the mean of its divisors is an integer number (53175150).

Almost surely, 2^861418504 is an apocalyptic number.

It is an amenable number.

861418504 is a deficient number, since it is larger than the sum of its proper divisors (840186296).

861418504 is a wasteful number, since it uses less digits than its factorization.

861418504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813 (or 4809 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 861418504 is about 29349.9319249636. The cubic root of 861418504 is about 951.4911039779.

The spelling of 861418504 in words is "eight hundred sixty-one million, four hundred eighteen thousand, five hundred four".