18334518780 has 96 divisors (see below), whose sum is σ = 51631546176. Its totient is φ = 4861198336.

The previous prime is 18334518773. The next prime is 18334518847. The reversal of 18334518780 is 8781543381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15064732 + ... + 15065948.

It is an arithmetic number, because the mean of its divisors is an integer number (537828606).

Almost surely, 2^18334518780 is an apocalyptic number.

18334518780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18334518780 is an abundant number, since it is smaller than the sum of its proper divisors (33297027396).

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

18334518780 is a wasteful number, since it uses less digits than its factorization.

18334518780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463 (or 2461 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 18334518780 in words is "eighteen billion, three hundred thirty-four million, five hundred eighteen thousand, seven hundred eighty".