13698313249 has 2 divisors, whose sum is σ = 13698313250. Its totient is φ = 13698313248.

The previous prime is 13698313247. The next prime is 13698313313. The reversal of 13698313249 is 94231389631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7462368225 + 6235945024 = 86385^2 + 78968^2 .

It is a cyclic number.

It is not a de Polignac number, because 13698313249 - 2¹ = 13698313247 is a prime.

Together with 13698313247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13698313247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6849156624 + 6849156625.

It is an arithmetic number, because the mean of its divisors is an integer number (6849156625).

Almost surely, 2^13698313249 is an apocalyptic number.

It is an amenable number.

13698313249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13698313249 is an equidigital number, since it uses as much as digits as its factorization.

13698313249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The spelling of 13698313249 in words is "thirteen billion, six hundred ninety-eight million, three hundred thirteen thousand, two hundred forty-nine".