18619755316 has 12 divisors (see below), whose sum is σ = 32586452388. Its totient is φ = 9309340352.

The previous prime is 18619755289. The next prime is 18619755353. The reversal of 18619755316 is 61355791681.

It can be written as a sum of positive squares in 2 ways, for example, as 8204736400 + 10415018916 = 90580^2 + 102054^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50551 + ... + 199486.

It is an arithmetic number, because the mean of its divisors is an integer number (2715537699).

Almost surely, 2^18619755316 is an apocalyptic number.

It is an amenable number.

18619755316 is a deficient number, since it is larger than the sum of its proper divisors (13966697072).

18619755316 is a wasteful number, since it uses less digits than its factorization.

18619755316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268658 (or 268656 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 52.

The spelling of 18619755316 in words is "eighteen billion, six hundred nineteen million, seven hundred fifty-five thousand, three hundred sixteen".