18472513920 has 384 divisors, whose sum is σ = 70179631200. Its totient is φ = 4118446080.

The previous prime is 18472513909. The next prime is 18472513937. The reversal of 18472513920 is 2931527481.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3854886 + ... + 3859674.

Almost surely, 2^18472513920 is an apocalyptic number.

18472513920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18472513920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35089815600).

18472513920 is an abundant number, since it is smaller than the sum of its proper divisors (51707117280).

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

18472513920 is a wasteful number, since it uses less digits than its factorization.

18472513920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866 (or 4847 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 18472513920 in words is "eighteen billion, four hundred seventy-two million, five hundred thirteen thousand, nine hundred twenty".