1914589977617 has 2 divisors, whose sum is σ = 1914589977618. Its totient is φ = 1914589977616.

The previous prime is 1914589977613. The next prime is 1914589977649. The reversal of 1914589977617 is 7167799854191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1228038532561 + 686551445056 = 1108169^2 + 828584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1914589977617 - 2² = 1914589977613 is a prime.

It is not a weakly prime, because it can be changed into another prime (1914589977611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957294988808 + 957294988809.

It is an arithmetic number, because the mean of its divisors is an integer number (957294988809).

Almost surely, 2^{1914589977617} is an apocalyptic number.

It is an amenable number.

1914589977617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1914589977617 is an equidigital number, since it uses as much as digits as its factorization.

1914589977617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240045120, while the sum is 74.

The spelling of 1914589977617 in words is "one trillion, nine hundred fourteen billion, five hundred eighty-nine million, nine hundred seventy-seven thousand, six hundred seventeen".