18683352020 has 48 divisors (see below), whose sum is σ = 40324919040. Its totient is φ = 7266040704.

The previous prime is 18683352007. The next prime is 18683352043. The reversal of 18683352020 is 2025338681.

It is a congruent number.

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, 1091891 + ... + 1108869.

It is an arithmetic number, because the mean of its divisors is an integer number (840102480).

Almost surely, 2^18683352020 is an apocalyptic number.

18683352020 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 18683352020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20162459520).

18683352020 is an abundant number, since it is smaller than the sum of its proper divisors (21641567020).

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

18683352020 is a wasteful number, since it uses less digits than its factorization.

18683352020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512 (or 18510 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 18683352020 in words is "eighteen billion, six hundred eighty-three million, three hundred fifty-two thousand, twenty".