18842518180 has 24 divisors (see below), whose sum is σ = 40126605120. Its totient is φ = 7430851680.

The previous prime is 18842518169. The next prime is 18842518187. The reversal of 18842518180 is 8181524881.

It is a self number, because there is not a number n which added to its sum of digits gives 18842518180.

It is not an unprimeable number, because it can be changed into a prime (18842518187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6633270 + ... + 6636109.

It is an arithmetic number, because the mean of its divisors is an integer number (1671941880).

Almost surely, 2^18842518180 is an apocalyptic number.

18842518180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18842518180 is an abundant number, since it is smaller than the sum of its proper divisors (21284086940).

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

18842518180 is a wasteful number, since it uses less digits than its factorization.

18842518180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13269459 (or 13269457 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 46.

The spelling of 18842518180 in words is "eighteen billion, eight hundred forty-two million, five hundred eighteen thousand, one hundred eighty".