18783986713 has 8 divisors (see below), whose sum is σ = 18913639680. Its totient is φ = 18654403200.

The previous prime is 18783986699. The next prime is 18783986761. The reversal of 18783986713 is 31768938781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18783986713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18783986773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600681 + ... + 631177.

It is an arithmetic number, because the mean of its divisors is an integer number (2364204960).

Almost surely, 2^18783986713 is an apocalyptic number.

It is an amenable number.

18783986713 is a deficient number, since it is larger than the sum of its proper divisors (129652967).

18783986713 is a wasteful number, since it uses less digits than its factorization.

18783986713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34727.

The product of its digits is 12192768, while the sum is 61.

The spelling of 18783986713 in words is "eighteen billion, seven hundred eighty-three million, nine hundred eighty-six thousand, seven hundred thirteen".