18205370180 has 12 divisors (see below), whose sum is σ = 38231277420. Its totient is φ = 7282148064.

The previous prime is 18205370173. The next prime is 18205370207. The reversal of 18205370180 is 8107350281.

It can be written as a sum of positive squares in 2 ways, for example, as 9774090496 + 8431279684 = 98864^2 + 91822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18205370180.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455134235 + ... + 455134274.

It is an arithmetic number, because the mean of its divisors is an integer number (3185939785).

Almost surely, 2^18205370180 is an apocalyptic number.

18205370180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18205370180 is an abundant number, since it is smaller than the sum of its proper divisors (20025907240).

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

18205370180 is a wasteful number, since it uses less digits than its factorization.

18205370180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910268518 (or 910268516 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 18205370180 in words is "eighteen billion, two hundred five million, three hundred seventy thousand, one hundred eighty".