1298106208397 has 2 divisors, whose sum is σ = 1298106208398. Its totient is φ = 1298106208396.

The previous prime is 1298106208381. The next prime is 1298106208409. The reversal of 1298106208397 is 7938026018921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173281078761 + 124825129636 = 1083181^2 + 353306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298106208397 - 2⁴ = 1298106208381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298106208337) 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, 649053104198 + 649053104199.

It is an arithmetic number, because the mean of its divisors is an integer number (649053104199).

Almost surely, 2^{1298106208397} is an apocalyptic number.

It is an amenable number.

1298106208397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298106208397 is an equidigital number, since it uses as much as digits as its factorization.

1298106208397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 1298106208397 in words is "one trillion, two hundred ninety-eight billion, one hundred six million, two hundred eight thousand, three hundred ninety-seven".