18824882520 has 128 divisors (see below), whose sum is σ = 58492108800. Its totient is φ = 4841055744.

The previous prime is 18824882509. The next prime is 18824882579. The reversal of 18824882520 is 2528842881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18824882520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3418089 + ... + 3423591.

It is an arithmetic number, because the mean of its divisors is an integer number (456969600).

Almost surely, 2^18824882520 is an apocalyptic number.

18824882520 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 18824882520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29246054400).

18824882520 is an abundant number, since it is smaller than the sum of its proper divisors (39667226280).

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

18824882520 is a wasteful number, since it uses less digits than its factorization.

18824882520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 48.

The spelling of 18824882520 in words is "eighteen billion, eight hundred twenty-four million, eight hundred eighty-two thousand, five hundred twenty".