18488687020 has 12 divisors (see below), whose sum is σ = 38826242784. Its totient is φ = 7395474800.

The previous prime is 18488686913. The next prime is 18488687033. The reversal of 18488687020 is 2078688481.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462217156 + ... + 462217195.

It is an arithmetic number, because the mean of its divisors is an integer number (3235520232).

Almost surely, 2^18488687020 is an apocalyptic number.

18488687020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18488687020 is an abundant number, since it is smaller than the sum of its proper divisors (20337555764).

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

18488687020 is a wasteful number, since it uses less digits than its factorization.

18488687020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924434360 (or 924434358 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 52.

It can be divided in two parts, 1848 and 8687020, that added together give a palindrome (8688868).

The spelling of 18488687020 in words is "eighteen billion, four hundred eighty-eight million, six hundred eighty-seven thousand, twenty".