938040945613 has 2 divisors, whose sum is σ = 938040945614. Its totient is φ = 938040945612.

The previous prime is 938040945553. The next prime is 938040945619. The reversal of 938040945613 is 316549040839.

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., 879088134409 + 58952811204 = 937597^2 + 242802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938040945613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938040945619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469020472806 + 469020472807.

It is an arithmetic number, because the mean of its divisors is an integer number (469020472807).

Almost surely, 2^938040945613 is an apocalyptic number.

It is an amenable number.

938040945613 is a deficient number, since it is larger than the sum of its proper divisors (1).

938040945613 is an equidigital number, since it uses as much as digits as its factorization.

938040945613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 938040945613 in words is "nine hundred thirty-eight billion, forty million, nine hundred forty-five thousand, six hundred thirteen".