18333500020 has 48 divisors (see below), whose sum is σ = 42010069248. Its totient is φ = 6665189760.

The previous prime is 18333499997. The next prime is 18333500023. The reversal of 18333500020 is 2000533381.

It is a super-2 number, since 2×18333500020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18333500023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1447234 + ... + 1459846.

It is an arithmetic number, because the mean of its divisors is an integer number (875209776).

Almost surely, 2^18333500020 is an apocalyptic number.

18333500020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18333500020 is an abundant number, since it is smaller than the sum of its proper divisors (23676569228).

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

18333500020 is a wasteful number, since it uses less digits than its factorization.

18333500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240 (or 19238 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 18333500020 in words is "eighteen billion, three hundred thirty-three million, five hundred thousand, twenty".