1317694589 has 2 divisors, whose sum is σ = 1317694590. Its totient is φ = 1317694588.

The previous prime is 1317694571. The next prime is 1317694591. The reversal of 1317694589 is 9854967131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1307184025 + 10510564 = 36155^2 + 3242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317694589 is a prime.

It is a Sophie Germain prime.

Together with 1317694591, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317694589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317694519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658847294 + 658847295.

It is an arithmetic number, because the mean of its divisors is an integer number (658847295).

Almost surely, 2^1317694589 is an apocalyptic number.

It is an amenable number.

1317694589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317694589 is an equidigital number, since it uses as much as digits as its factorization.

1317694589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 1317694589 is about 36300.0632093114. The cubic root of 1317694589 is about 1096.3223154385.

The spelling of 1317694589 in words is "one billion, three hundred seventeen million, six hundred ninety-four thousand, five hundred eighty-nine".