1289813196673 has 2 divisors, whose sum is σ = 1289813196674. Its totient is φ = 1289813196672.

The previous prime is 1289813196667. The next prime is 1289813196713. The reversal of 1289813196673 is 3766913189821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712795209984 + 577017986689 = 844272^2 + 759617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1289813196673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1289813166673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644906598336 + 644906598337.

It is an arithmetic number, because the mean of its divisors is an integer number (644906598337).

Almost surely, 2^{1289813196673} is an apocalyptic number.

It is an amenable number.

1289813196673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1289813196673 is an equidigital number, since it uses as much as digits as its factorization.

1289813196673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 64.

The spelling of 1289813196673 in words is "one trillion, two hundred eighty-nine billion, eight hundred thirteen million, one hundred ninety-six thousand, six hundred seventy-three".