18996460738313 has 2 divisors, whose sum is σ = 18996460738314. Its totient is φ = 18996460738312.

The previous prime is 18996460738289. The next prime is 18996460738361. The reversal of 18996460738313 is 31383706469981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9726433150729 + 9270027587584 = 3118723^2 + 3044672^2 .

It is an emirp because it is prime and its reverse (31383706469981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18996460738313 - 2⁴⁴ = 1404274693897 is a prime.

It is not a weakly prime, because it can be changed into another prime (18996460738513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9498230369156 + 9498230369157.

It is an arithmetic number, because the mean of its divisors is an integer number (9498230369157).

Almost surely, 2^{18996460738313} is an apocalyptic number.

It is an amenable number.

18996460738313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18996460738313 is an equidigital number, since it uses as much as digits as its factorization.

18996460738313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 68.

The spelling of 18996460738313 in words is "eighteen trillion, nine hundred ninety-six billion, four hundred sixty million, seven hundred thirty-eight thousand, three hundred thirteen".