13843118917 has 2 divisors, whose sum is σ = 13843118918. Its totient is φ = 13843118916.

The previous prime is 13843118903. The next prime is 13843118923. The reversal of 13843118917 is 71981134831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7249841316 + 6593277601 = 85146^2 + 81199^2 .

It is a cyclic number.

It is not a de Polignac number, because 13843118917 - 2¹⁵ = 13843086149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13843115917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6921559458 + 6921559459.

It is an arithmetic number, because the mean of its divisors is an integer number (6921559459).

Almost surely, 2^13843118917 is an apocalyptic number.

It is an amenable number.

13843118917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13843118917 is an equidigital number, since it uses as much as digits as its factorization.

13843118917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The spelling of 13843118917 in words is "thirteen billion, eight hundred forty-three million, one hundred eighteen thousand, nine hundred seventeen".