1297682999 has 2 divisors, whose sum is σ = 1297683000. Its totient is φ = 1297682998.

The previous prime is 1297682989. The next prime is 1297683067. The reversal of 1297682999 is 9992867921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1297682999 - 2¹² = 1297678903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297682959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648841499 + 648841500.

It is an arithmetic number, because the mean of its divisors is an integer number (648841500).

Almost surely, 2^1297682999 is an apocalyptic number.

1297682999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297682999 is an equidigital number, since it uses as much as digits as its factorization.

1297682999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 1297682999 is about 36023.3674022849. The cubic root of 1297682999 is about 1090.7440978731.

The spelling of 1297682999 in words is "one billion, two hundred ninety-seven million, six hundred eighty-two thousand, nine hundred ninety-nine".