18873748520 has 32 divisors (see below), whose sum is σ = 46326474720. Its totient is φ = 6863181120.

The previous prime is 18873748471. The next prime is 18873748529. The reversal of 18873748520 is 2584737881.

It is not an unprimeable number, because it can be changed into a prime (18873748529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21447002 + ... + 21447881.

It is an arithmetic number, because the mean of its divisors is an integer number (1447702335).

Almost surely, 2^18873748520 is an apocalyptic number.

18873748520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18873748520 is an abundant number, since it is smaller than the sum of its proper divisors (27452726200).

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

18873748520 is a wasteful number, since it uses less digits than its factorization.

18873748520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42894905 (or 42894901 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 18873748520 in words is "eighteen billion, eight hundred seventy-three million, seven hundred forty-eight thousand, five hundred twenty".