18728574444316 has 24 divisors (see below), whose sum is σ = 35756230124160. Its totient is φ = 8512588642800.

The previous prime is 18728574444301. The next prime is 18728574444323. The reversal of 18728574444316 is 61344447582781.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9044830 + ... + 10920901.

It is an arithmetic number, because the mean of its divisors is an integer number (1489842921840).

Almost surely, 2^{18728574444316} is an apocalyptic number.

It is an amenable number.

18728574444316 is a deficient number, since it is larger than the sum of its proper divisors (17027655679844).

18728574444316 is a wasteful number, since it uses less digits than its factorization.

18728574444316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19987065 (or 19987063 counting only the distinct ones).

The product of its digits is 144506880, while the sum is 64.

The spelling of 18728574444316 in words is "eighteen trillion, seven hundred twenty-eight billion, five hundred seventy-four million, four hundred forty-four thousand, three hundred sixteen".