1297455713 has 4 divisors (see below), whose sum is σ = 1305415728. Its totient is φ = 1289495700.

The previous prime is 1297455689. The next prime is 1297455739. The reversal of 1297455713 is 3175547921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1297455713 - 2²⁶ = 1230346849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1297455773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979763 + ... + 3980088.

It is an arithmetic number, because the mean of its divisors is an integer number (326353932).

Almost surely, 2^1297455713 is an apocalyptic number.

It is an amenable number.

1297455713 is a deficient number, since it is larger than the sum of its proper divisors (7960015).

1297455713 is an equidigital number, since it uses as much as digits as its factorization.

1297455713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960014.

The product of its digits is 264600, while the sum is 44.

The square root of 1297455713 is about 36020.2125618381. The cubic root of 1297455713 is about 1090.6804137689.

The spelling of 1297455713 in words is "one billion, two hundred ninety-seven million, four hundred fifty-five thousand, seven hundred thirteen".