1291830008597 has 2 divisors, whose sum is σ = 1291830008598. Its totient is φ = 1291830008596.

The previous prime is 1291830008509. The next prime is 1291830008603. The reversal of 1291830008597 is 7958000381921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 775974239236 + 515855769361 = 880894^2 + 718231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291830008597 - 2¹⁴ = 1291829992213 is a prime.

It is a super-2 number, since 2×1291830008597² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291830008797) 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, 645915004298 + 645915004299.

It is an arithmetic number, because the mean of its divisors is an integer number (645915004299).

Almost surely, 2^{1291830008597} is an apocalyptic number.

It is an amenable number.

1291830008597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291830008597 is an equidigital number, since it uses as much as digits as its factorization.

1291830008597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 1291830008597 in words is "one trillion, two hundred ninety-one billion, eight hundred thirty million, eight thousand, five hundred ninety-seven".