18045083380 has 12 divisors (see below), whose sum is σ = 37894675140. Its totient is φ = 7218033344.

The previous prime is 18045083327. The next prime is 18045083387. The reversal of 18045083380 is 8338054081.

It can be written as a sum of positive squares in 2 ways, for example, as 8818712464 + 9226370916 = 93908^2 + 96054^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045083387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451127065 + ... + 451127104.

It is an arithmetic number, because the mean of its divisors is an integer number (3157889595).

Almost surely, 2^18045083380 is an apocalyptic number.

18045083380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18045083380 is an abundant number, since it is smaller than the sum of its proper divisors (19849591760).

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

18045083380 is a wasteful number, since it uses less digits than its factorization.

18045083380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902254178 (or 902254176 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 18045083380 in words is "eighteen billion, forty-five million, eighty-three thousand, three hundred eighty".