18835413520 has 160 divisors (see below), whose sum is σ = 54778279680. Its totient is φ = 5851422720.

The previous prime is 18835413497. The next prime is 18835413577. The reversal of 18835413520 is 2531453881.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 1923196 + ... + 1932964.

It is an arithmetic number, because the mean of its divisors is an integer number (342364248).

Almost surely, 2^18835413520 is an apocalyptic number.

18835413520 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 18835413520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27389139840).

18835413520 is an abundant number, since it is smaller than the sum of its proper divisors (35942866160).

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

18835413520 is a wasteful number, since it uses less digits than its factorization.

18835413520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10113 (or 10107 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 18835413520 in words is "eighteen billion, eight hundred thirty-five million, four hundred thirteen thousand, five hundred twenty".