1313457245 has 16 divisors (see below), whose sum is σ = 1599637872. Its totient is φ = 1035141120.

The previous prime is 1313457203. The next prime is 1313457269. The reversal of 1313457245 is 5427543131.

It can be written as a sum of positive squares in 8 ways, for example, as 88247236 + 1225210009 = 9394^2 + 35003^2 .

It is not a de Polignac number, because 1313457245 - 2¹² = 1313453149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419285 + ... + 422405.

It is an arithmetic number, because the mean of its divisors is an integer number (99977367).

Almost surely, 2^1313457245 is an apocalyptic number.

It is an amenable number.

1313457245 is a deficient number, since it is larger than the sum of its proper divisors (286180627).

1313457245 is a wasteful number, since it uses less digits than its factorization.

1313457245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352.

The product of its digits is 50400, while the sum is 35.

The square root of 1313457245 is about 36241.6506936425. The cubic root of 1313457245 is about 1095.1458963389.

The spelling of 1313457245 in words is "one billion, three hundred thirteen million, four hundred fifty-seven thousand, two hundred forty-five".