18418448872 has 32 divisors (see below), whose sum is σ = 35714764800. Its totient is φ = 8895614400.

The previous prime is 18418448861. The next prime is 18418448911. The reversal of 18418448872 is 27884481481.

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 7 ways as a sum of consecutive naturals, for example, 65529 + ... + 202807.

It is an arithmetic number, because the mean of its divisors is an integer number (1116086400).

Almost surely, 2^18418448872 is an apocalyptic number.

It is an amenable number.

18418448872 is a deficient number, since it is larger than the sum of its proper divisors (17296315928).

18418448872 is a wasteful number, since it uses less digits than its factorization.

18418448872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137857 (or 137853 counting only the distinct ones).

The product of its digits is 3670016, while the sum is 55.

The spelling of 18418448872 in words is "eighteen billion, four hundred eighteen million, four hundred forty-eight thousand, eight hundred seventy-two".