1315940705 has 16 divisors (see below), whose sum is σ = 1644041424. Its totient is φ = 1010257920.

The previous prime is 1315940701. The next prime is 1315940713. The reversal of 1315940705 is 5070495131.

It can be written as a sum of positive squares in 8 ways, for example, as 18284176 + 1297656529 = 4276^2 + 36023^2 .

It is not a de Polignac number, because 1315940705 - 2² = 1315940701 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1315940701) 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 15 ways as a sum of consecutive naturals, for example, 35216 + ... + 62225.

It is an arithmetic number, because the mean of its divisors is an integer number (102752589).

Almost surely, 2^1315940705 is an apocalyptic number.

It is an amenable number.

1315940705 is a deficient number, since it is larger than the sum of its proper divisors (328100719).

1315940705 is an equidigital number, since it uses as much as digits as its factorization.

1315940705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97556.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1315940705 is about 36275.8970254355. The cubic root of 1315940705 is about 1095.8356887894.

The spelling of 1315940705 in words is "one billion, three hundred fifteen million, nine hundred forty thousand, seven hundred five".