18704286720 has 880 divisors, whose sum is σ = 81320595840. Its totient is φ = 4013162496.

The previous prime is 18704286707. The next prime is 18704286721. The reversal of 18704286720 is 2768240781.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (18704286721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 49351491 + ... + 49351869.

It is an arithmetic number, because the mean of its divisors is an integer number (92409768).

Almost surely, 2^18704286720 is an apocalyptic number.

18704286720 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 18704286720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40660297920).

18704286720 is an abundant number, since it is smaller than the sum of its proper divisors (62616309120).

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

18704286720 is a wasteful number, since it uses less digits than its factorization.

18704286720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 18704286720 in words is "eighteen billion, seven hundred four million, two hundred eighty-six thousand, seven hundred twenty".