1298967613409 has 2 divisors, whose sum is σ = 1298967613410. Its totient is φ = 1298967613408.

The previous prime is 1298967613403. The next prime is 1298967613451. The reversal of 1298967613409 is 9043167698921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296630857809 + 2336755600 = 1138697^2 + 48340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298967613409 - 2¹⁶ = 1298967547873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298967613403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649483806704 + 649483806705.

It is an arithmetic number, because the mean of its divisors is an integer number (649483806705).

Almost surely, 2^{1298967613409} is an apocalyptic number.

It is an amenable number.

1298967613409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298967613409 is an equidigital number, since it uses as much as digits as its factorization.

1298967613409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The spelling of 1298967613409 in words is "one trillion, two hundred ninety-eight billion, nine hundred sixty-seven million, six hundred thirteen thousand, four hundred nine".