19396952117 has 2 divisors, whose sum is σ = 19396952118. Its totient is φ = 19396952116.

The previous prime is 19396952053. The next prime is 19396952143. The reversal of 19396952117 is 71125969391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15451981636 + 3944970481 = 124306^2 + 62809^2 .

It is a cyclic number.

It is not a de Polignac number, because 19396952117 - 2⁶ = 19396952053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19396951117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9698476058 + 9698476059.

It is an arithmetic number, because the mean of its divisors is an integer number (9698476059).

Almost surely, 2^19396952117 is an apocalyptic number.

It is an amenable number.

19396952117 is a deficient number, since it is larger than the sum of its proper divisors (1).

19396952117 is an equidigital number, since it uses as much as digits as its factorization.

19396952117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The spelling of 19396952117 in words is "nineteen billion, three hundred ninety-six million, nine hundred fifty-two thousand, one hundred seventeen".