18662713739 has 2 divisors, whose sum is σ = 18662713740. Its totient is φ = 18662713738.

The previous prime is 18662713721. The next prime is 18662713801. The reversal of 18662713739 is 93731726681.

It is a weak prime.

It is an emirp because it is prime and its reverse (93731726681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18662713739 - 2¹² = 18662709643 is a prime.

It is not a weakly prime, because it can be changed into another prime (18662713439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9331356869 + 9331356870.

It is an arithmetic number, because the mean of its divisors is an integer number (9331356870).

Almost surely, 2^18662713739 is an apocalyptic number.

18662713739 is a deficient number, since it is larger than the sum of its proper divisors (1).

18662713739 is an equidigital number, since it uses as much as digits as its factorization.

18662713739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The spelling of 18662713739 in words is "eighteen billion, six hundred sixty-two million, seven hundred thirteen thousand, seven hundred thirty-nine".