18965076117313 has 2 divisors, whose sum is σ = 18965076117314. Its totient is φ = 18965076117312.

The previous prime is 18965076117259. The next prime is 18965076117329. The reversal of 18965076117313 is 31371167056981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16542050764864 + 2423025352449 = 4067192^2 + 1556607^2 .

It is an emirp because it is prime and its reverse (31371167056981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18965076117313 - 2¹³ = 18965076109121 is a prime.

It is a super-2 number, since 2×18965076117313² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18965076187313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9482538058656 + 9482538058657.

It is an arithmetic number, because the mean of its divisors is an integer number (9482538058657).

Almost surely, 2^{18965076117313} is an apocalyptic number.

It is an amenable number.

18965076117313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18965076117313 is an equidigital number, since it uses as much as digits as its factorization.

18965076117313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 18965076117313 in words is "eighteen trillion, nine hundred sixty-five billion, seventy-six million, one hundred seventeen thousand, three hundred thirteen".