1297579385 has 8 divisors (see below), whose sum is σ = 1624795200. Its totient is φ = 992930224.

The previous prime is 1297579363. The next prime is 1297579403. The reversal of 1297579385 is 5839757921.

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 1297579385 - 2⁶ = 1297579321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1297579385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5641535 + ... + 5641764.

It is an arithmetic number, because the mean of its divisors is an integer number (203099400).

Almost surely, 2^1297579385 is an apocalyptic number.

It is an amenable number.

1297579385 is a deficient number, since it is larger than the sum of its proper divisors (327215815).

1297579385 is a wasteful number, since it uses less digits than its factorization.

1297579385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11283327.

The product of its digits is 4762800, while the sum is 56.

The square root of 1297579385 is about 36021.9292237381. The cubic root of 1297579385 is about 1090.7150668059.

The spelling of 1297579385 in words is "one billion, two hundred ninety-seven million, five hundred seventy-nine thousand, three hundred eighty-five".