18801347240 has 128 divisors (see below), whose sum is σ = 48823810560. Its totient is φ = 6460591104.

The previous prime is 18801347239. The next prime is 18801347261. The reversal of 18801347240 is 4274310881.

It is a junction number, because it is equal to n+sod(n) for n = 18801347194 and 18801347203.

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, 421277 + ... + 463763.

It is an arithmetic number, because the mean of its divisors is an integer number (381436020).

Almost surely, 2^18801347240 is an apocalyptic number.

18801347240 is a gapful number since it is divisible by the number (10) 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 18801347240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24411905280).

18801347240 is an abundant number, since it is smaller than the sum of its proper divisors (30022463320).

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

18801347240 is a wasteful number, since it uses less digits than its factorization.

18801347240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42571 (or 42567 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 18801347240 in words is "eighteen billion, eight hundred one million, three hundred forty-seven thousand, two hundred forty".