18081180 has 72 divisors (see below), whose sum is σ = 59072832. Its totient is φ = 4450176.

The previous prime is 18081169. The next prime is 18081187. The reversal of 18081180 is 8118081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1524 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (820456).

Almost surely, 2^18081180 is an apocalyptic number.

18081180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18081180 is an abundant number, since it is smaller than the sum of its proper divisors (40991652).

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

18081180 is a wasteful number, since it uses less digits than its factorization.

18081180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7755 (or 7750 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 18081180 is about 4252.1970791580. The cubic root of 18081180 is about 262.4675333996.

The spelling of 18081180 in words is "eighteen million, eighty-one thousand, one hundred eighty".