1245969713 has 8 divisors (see below), whose sum is σ = 1267336296. Its totient is φ = 1224633600.

The previous prime is 1245969607. The next prime is 1245969727. The reversal of 1245969713 is 3179695421.

It can be written as a sum of positive squares in 4 ways, for example, as 357512464 + 888457249 = 18908^2 + 29807^2 .

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 1245969713 - 2²⁰ = 1244921137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245962713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84233 + ... + 97913.

It is an arithmetic number, because the mean of its divisors is an integer number (158417037).

Almost surely, 2^1245969713 is an apocalyptic number.

It is an amenable number.

1245969713 is a deficient number, since it is larger than the sum of its proper divisors (21366583).

1245969713 is a wasteful number, since it uses less digits than its factorization.

1245969713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15235.

The product of its digits is 408240, while the sum is 47.

The square root of 1245969713 is about 35298.2961770112. The cubic root of 1245969713 is about 1076.0583665013.

The spelling of 1245969713 in words is "one billion, two hundred forty-five million, nine hundred sixty-nine thousand, seven hundred thirteen".