18466313536 has 112 divisors (see below), whose sum is σ = 41778570240. Its totient is φ = 8023518720.

The previous prime is 18466313513. The next prime is 18466313543. The reversal of 18466313536 is 63531366481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1416295 + ... + 1429273.

Almost surely, 2^18466313536 is an apocalyptic number.

18466313536 is a gapful number since it is divisible by the number (16) 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 18466313536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20889285120).

18466313536 is an abundant number, since it is smaller than the sum of its proper divisors (23312256704).

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

18466313536 is a wasteful number, since it uses less digits than its factorization.

18466313536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13092 (or 13082 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 18466313536 in words is "eighteen billion, four hundred sixty-six million, three hundred thirteen thousand, five hundred thirty-six".