1297289663 has 2 divisors, whose sum is σ = 1297289664. Its totient is φ = 1297289662.

The previous prime is 1297289659. The next prime is 1297289701. The reversal of 1297289663 is 3669827921.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3669827921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297289663 - 2² = 1297289659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297289603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648644831 + 648644832.

It is an arithmetic number, because the mean of its divisors is an integer number (648644832).

Almost surely, 2^1297289663 is an apocalyptic number.

1297289663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297289663 is an equidigital number, since it uses as much as digits as its factorization.

1297289663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 1297289663 is about 36017.9075322262. The cubic root of 1297289663 is about 1090.6338829040.

The spelling of 1297289663 in words is "one billion, two hundred ninety-seven million, two hundred eighty-nine thousand, six hundred sixty-three".