18268320180 has 48 divisors (see below), whose sum is σ = 55801416384. Its totient is φ = 4428683520.

The previous prime is 18268320179. The next prime is 18268320223. The reversal of 18268320180 is 8102386281.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13838977 + ... + 13840296.

It is an arithmetic number, because the mean of its divisors is an integer number (1162529508).

Almost surely, 2^18268320180 is an apocalyptic number.

18268320180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18268320180 is an abundant number, since it is smaller than the sum of its proper divisors (37533096204).

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

18268320180 is a wasteful number, since it uses less digits than its factorization.

18268320180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27679296 (or 27679294 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 18268320180 in words is "eighteen billion, two hundred sixty-eight million, three hundred twenty thousand, one hundred eighty".