18344166860 has 12 divisors (see below), whose sum is σ = 38522750448. Its totient is φ = 7337666736.

The previous prime is 18344166853. The next prime is 18344166871. The reversal of 18344166860 is 6866144381.

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, 458604152 + ... + 458604191.

It is an arithmetic number, because the mean of its divisors is an integer number (3210229204).

Almost surely, 2^18344166860 is an apocalyptic number.

18344166860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18344166860 is an abundant number, since it is smaller than the sum of its proper divisors (20178583588).

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

18344166860 is a wasteful number, since it uses less digits than its factorization.

18344166860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917208352 (or 917208350 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 18344166860 in words is "eighteen billion, three hundred forty-four million, one hundred sixty-six thousand, eight hundred sixty".