18481500188308 has 12 divisors (see below), whose sum is σ = 32342714873140. Its totient is φ = 9240724510272.

The previous prime is 18481500188257. The next prime is 18481500188309. The reversal of 18481500188308 is 80388100518481.

It can be written as a sum of positive squares in 2 ways, for example, as 5786901737604 + 12694598450704 = 2405598^2 + 3562948^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18481500188309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4721913 + ... + 7698016.

Almost surely, 2^{18481500188308} is an apocalyptic number.

It is an amenable number.

18481500188308 is a deficient number, since it is larger than the sum of its proper divisors (13861214684832).

18481500188308 is a wasteful number, since it uses less digits than its factorization.

18481500188308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12791946 (or 12791944 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 55.

The spelling of 18481500188308 in words is "eighteen trillion, four hundred eighty-one billion, five hundred million, one hundred eighty-eight thousand, three hundred eight".