1119861788917 has 2 divisors, whose sum is σ = 1119861788918. Its totient is φ = 1119861788916.

The previous prime is 1119861788893. The next prime is 1119861788921. The reversal of 1119861788917 is 7198871689111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 713080602481 + 406781186436 = 844441^2 + 637794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119861788917 - 2³⁹ = 570105975029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1119861788117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559930894458 + 559930894459.

It is an arithmetic number, because the mean of its divisors is an integer number (559930894459).

Almost surely, 2^{1119861788917} is an apocalyptic number.

It is an amenable number.

1119861788917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119861788917 is an equidigital number, since it uses as much as digits as its factorization.

1119861788917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 67.

The spelling of 1119861788917 in words is "one trillion, one hundred nineteen billion, eight hundred sixty-one million, seven hundred eighty-eight thousand, nine hundred seventeen".