18217464936 has 64 divisors (see below), whose sum is σ = 52298956800. Its totient is φ = 5229892800.

The previous prime is 18217464931. The next prime is 18217464943. The reversal of 18217464936 is 63946471281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18217464931) 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, 1810920 + ... + 1820951.

It is an arithmetic number, because the mean of its divisors is an integer number (817171200).

Almost surely, 2^18217464936 is an apocalyptic number.

It is an amenable number.

18217464936 is an abundant number, since it is smaller than the sum of its proper divisors (34081491864).

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

18217464936 is a wasteful number, since it uses less digits than its factorization.

18217464936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631910 (or 3631906 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 18217464936 in words is "eighteen billion, two hundred seventeen million, four hundred sixty-four thousand, nine hundred thirty-six".