18835831257137 has 2 divisors, whose sum is σ = 18835831257138. Its totient is φ = 18835831257136.

The previous prime is 18835831257127. The next prime is 18835831257181. The reversal of 18835831257137 is 73175213853881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9797895365281 + 9037935891856 = 3130159^2 + 3006316^2 .

It is an emirp because it is prime and its reverse (73175213853881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18835831257137 - 2¹⁶ = 18835831191601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18835831257137.

It is not a weakly prime, because it can be changed into another prime (18835831257127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417915628568 + 9417915628569.

It is an arithmetic number, because the mean of its divisors is an integer number (9417915628569).

Almost surely, 2^{18835831257137} is an apocalyptic number.

It is an amenable number.

18835831257137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18835831257137 is an equidigital number, since it uses as much as digits as its factorization.

18835831257137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 62.

The spelling of 18835831257137 in words is "eighteen trillion, eight hundred thirty-five billion, eight hundred thirty-one million, two hundred fifty-seven thousand, one hundred thirty-seven".