18380492513320 has 64 divisors (see below), whose sum is σ = 50044366183680. Its totient is φ = 5931184137216.

The previous prime is 18380492513311. The next prime is 18380492513321. The reversal of 18380492513320 is 2331529408381.

It is not an unprimeable number, because it can be changed into a prime (18380492513321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1930719244 + ... + 1930728763.

It is an arithmetic number, because the mean of its divisors is an integer number (781943221620).

Almost surely, 2^{18380492513320} is an apocalyptic number.

18380492513320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18380492513320 is an abundant number, since it is smaller than the sum of its proper divisors (31663873670360).

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

18380492513320 is a wasteful number, since it uses less digits than its factorization.

18380492513320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861448042 (or 3861448038 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 18380492513320 in words is "eighteen trillion, three hundred eighty billion, four hundred ninety-two million, five hundred thirteen thousand, three hundred twenty".