18466503168 has 80 divisors (see below), whose sum is σ = 49227742080. Its totient is φ = 6151520256.

The previous prime is 18466503157. The next prime is 18466503191. The reversal of 18466503168 is 86130566481.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267321 + ... + 3272967.

It is an arithmetic number, because the mean of its divisors is an integer number (615346776).

Almost surely, 2^18466503168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18466503168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24613871040).

18466503168 is an abundant number, since it is smaller than the sum of its proper divisors (30761238912).

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

18466503168 is an equidigital number, since it uses as much as digits as its factorization.

18466503168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797 (or 7781 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 18466503168 in words is "eighteen billion, four hundred sixty-six million, five hundred three thousand, one hundred sixty-eight".