13888790197 has 2 divisors, whose sum is σ = 13888790198. Its totient is φ = 13888790196.

The previous prime is 13888790177. The next prime is 13888790207. The reversal of 13888790197 is 79109788831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13566192676 + 322597521 = 116474^2 + 17961^2 .

It is an emirp because it is prime and its reverse (79109788831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13888790197 - 2¹¹ = 13888788149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13888790147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944395098 + 6944395099.

It is an arithmetic number, because the mean of its divisors is an integer number (6944395099).

Almost surely, 2^13888790197 is an apocalyptic number.

It is an amenable number.

13888790197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13888790197 is an equidigital number, since it uses as much as digits as its factorization.

13888790197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 61.

The spelling of 13888790197 in words is "thirteen billion, eight hundred eighty-eight million, seven hundred ninety thousand, one hundred ninety-seven".