18192728192820 has 48 divisors (see below), whose sum is σ = 50940205138368. Its totient is φ = 4851340261120.

The previous prime is 18192728192819. The next prime is 18192728192867. The reversal of 18192728192820 is 2829182729181.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3911560 + ... + 7189280.

It is an arithmetic number, because the mean of its divisors is an integer number (1061254273716).

Almost surely, 2^{18192728192820} is an apocalyptic number.

18192728192820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18192728192820 is an abundant number, since it is smaller than the sum of its proper divisors (32747476945548).

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

18192728192820 is a wasteful number, since it uses less digits than its factorization.

18192728192820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370240 (or 3370238 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 60.

The spelling of 18192728192820 in words is "eighteen trillion, one hundred ninety-two billion, seven hundred twenty-eight million, one hundred ninety-two thousand, eight hundred twenty".