18831019713 has 16 divisors (see below), whose sum is σ = 28027566336. Its totient is φ = 11147325840.

The previous prime is 18831019709. The next prime is 18831019759. The reversal of 18831019713 is 31791013881.

It is a happy number.

It is not a de Polignac number, because 18831019713 - 2² = 18831019709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18831019913) 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, 6633895 + ... + 6636732.

It is an arithmetic number, because the mean of its divisors is an integer number (1751722896).

Almost surely, 2^18831019713 is an apocalyptic number.

It is an amenable number.

18831019713 is a deficient number, since it is larger than the sum of its proper divisors (9196546623).

18831019713 is a wasteful number, since it uses less digits than its factorization.

18831019713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13270684.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 18831019713 in words is "eighteen billion, eight hundred thirty-one million, nineteen thousand, seven hundred thirteen".