1297983659 has 8 divisors (see below), whose sum is σ = 1483742208. Its totient is φ = 1112308200.

The previous prime is 1297983629. The next prime is 1297983683. The reversal of 1297983659 is 9563897921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1297983659 - 2¹⁶ = 1297918123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1297983598 and 1297983607.

It is not an unprimeable number, because it can be changed into a prime (1297983629) 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 in 7 ways as a sum of consecutive naturals, for example, 17384 + ... + 53834.

It is an arithmetic number, because the mean of its divisors is an integer number (185467776).

Almost surely, 2^1297983659 is an apocalyptic number.

1297983659 is a deficient number, since it is larger than the sum of its proper divisors (185758549).

1297983659 is an equidigital number, since it uses as much as digits as its factorization.

1297983659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41545.

The product of its digits is 7348320, while the sum is 59.

The square root of 1297983659 is about 36027.5402851763. The cubic root of 1297983659 is about 1090.8283294861.

The spelling of 1297983659 in words is "one billion, two hundred ninety-seven million, nine hundred eighty-three thousand, six hundred fifty-nine".