1168604317889 has 2 divisors, whose sum is σ = 1168604317890. Its totient is φ = 1168604317888.

The previous prime is 1168604317883. The next prime is 1168604317891. The reversal of 1168604317889 is 9887134068611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1105820496400 + 62783821489 = 1051580^2 + 250567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168604317889 is a prime.

Together with 1168604317891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1168604317883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584302158944 + 584302158945.

It is an arithmetic number, because the mean of its divisors is an integer number (584302158945).

Almost surely, 2^{1168604317889} is an apocalyptic number.

It is an amenable number.

1168604317889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168604317889 is an equidigital number, since it uses as much as digits as its factorization.

1168604317889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 1168604317889 in words is "one trillion, one hundred sixty-eight billion, six hundred four million, three hundred seventeen thousand, eight hundred eighty-nine".