18120479974 has 16 divisors (see below), whose sum is σ = 27978398928. Its totient is φ = 8795453472.

The previous prime is 18120479957. The next prime is 18120479983. The reversal of 18120479974 is 47997402181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243597 + ... + 309160.

It is an arithmetic number, because the mean of its divisors is an integer number (1748649933).

Almost surely, 2^18120479974 is an apocalyptic number.

18120479974 is a deficient number, since it is larger than the sum of its proper divisors (9857918954).

18120479974 is a wasteful number, since it uses less digits than its factorization.

18120479974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553239.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 18120479974 in words is "eighteen billion, one hundred twenty million, four hundred seventy-nine thousand, nine hundred seventy-four".