18479073184 has 96 divisors (see below), whose sum is σ = 43735374144. Its totient is φ = 7573063680.

The previous prime is 18479073157. The next prime is 18479073203. The reversal of 18479073184 is 48137097481.

It is a super-2 number, since 2×18479073184² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149812 + ... + 243724.

It is an arithmetic number, because the mean of its divisors is an integer number (455576814).

Almost surely, 2^18479073184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18479073184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21867687072).

18479073184 is an abundant number, since it is smaller than the sum of its proper divisors (25256300960).

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

18479073184 is a wasteful number, since it uses less digits than its factorization.

18479073184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93990 (or 93982 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 18479073184 in words is "eighteen billion, four hundred seventy-nine million, seventy-three thousand, one hundred eighty-four".