18748550520 has 384 divisors, whose sum is σ = 74480212800. Its totient is φ = 4180377600.

The previous prime is 18748550503. The next prime is 18748550551. The reversal of 18748550520 is 2505584781.

18748550520 is a `hidden beast` number, since 1 + 8 + 7 + 48 + 550 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2165400 + ... + 2174040.

Almost surely, 2^18748550520 is an apocalyptic number.

18748550520 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 18748550520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37240106400).

18748550520 is an abundant number, since it is smaller than the sum of its proper divisors (55731662280).

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

18748550520 is a wasteful number, since it uses less digits than its factorization.

18748550520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8716 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The spelling of 18748550520 in words is "eighteen billion, seven hundred forty-eight million, five hundred fifty thousand, five hundred twenty".