1298588396957 has 2 divisors, whose sum is σ = 1298588396958. Its totient is φ = 1298588396956.

The previous prime is 1298588396947. The next prime is 1298588396983. The reversal of 1298588396957 is 7596938858921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833872143556 + 464716253401 = 913166^2 + 681701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298588396957 - 2²² = 1298584202653 is a prime.

It is a super-2 number, since 2×1298588396957² (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 (1298588396947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649294198478 + 649294198479.

It is an arithmetic number, because the mean of its divisors is an integer number (649294198479).

Almost surely, 2^{1298588396957} is an apocalyptic number.

It is an amenable number.

1298588396957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298588396957 is an equidigital number, since it uses as much as digits as its factorization.

1298588396957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2351462400, while the sum is 80.

The spelling of 1298588396957 in words is "one trillion, two hundred ninety-eight billion, five hundred eighty-eight million, three hundred ninety-six thousand, nine hundred fifty-seven".