18730940008 has 128 divisors (see below), whose sum is σ = 41417671680. Its totient is φ = 7855626240.

The previous prime is 18730939999. The next prime is 18730940021. The reversal of 18730940008 is 80004903781.

It is a super-2 number, since 2×18730940008² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7222360 + ... + 7224952.

It is an arithmetic number, because the mean of its divisors is an integer number (323575560).

Almost surely, 2^18730940008 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 18730940008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20708835840).

18730940008 is an abundant number, since it is smaller than the sum of its proper divisors (22686731672).

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

18730940008 is a wasteful number, since it uses less digits than its factorization.

18730940008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 18730940008 in words is "eighteen billion, seven hundred thirty million, nine hundred forty thousand, eight".