13490357917 has 2 divisors, whose sum is σ = 13490357918. Its totient is φ = 13490357916.

The previous prime is 13490357893. The next prime is 13490357981. The reversal of 13490357917 is 71975309431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9906419961 + 3583937956 = 99531^2 + 59866^2 .

It is an emirp because it is prime and its reverse (71975309431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13490357917 - 2¹⁹ = 13489833629 is a prime.

It is a super-3 number, since 3×13490357917³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13490357317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6745178958 + 6745178959.

It is an arithmetic number, because the mean of its divisors is an integer number (6745178959).

Almost surely, 2^13490357917 is an apocalyptic number.

It is an amenable number.

13490357917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13490357917 is an equidigital number, since it uses as much as digits as its factorization.

13490357917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 13490357917 in words is "thirteen billion, four hundred ninety million, three hundred fifty-seven thousand, nine hundred seventeen".