18809381180 has 24 divisors (see below), whose sum is σ = 39504462480. Its totient is φ = 7522845440.

The previous prime is 18809381177. The next prime is 18809381191. The reversal of 18809381180 is 8118390881.

It is a congruent number.

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, 128036 + ... + 232404.

It is an arithmetic number, because the mean of its divisors is an integer number (1646019270).

Almost surely, 2^18809381180 is an apocalyptic number.

18809381180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18809381180 is an abundant number, since it is smaller than the sum of its proper divisors (20695081300).

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

18809381180 is a wasteful number, since it uses less digits than its factorization.

18809381180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113389 (or 113387 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 47.

The spelling of 18809381180 in words is "eighteen billion, eight hundred nine million, three hundred eighty-one thousand, one hundred eighty".