1316814865 has 8 divisors (see below), whose sum is σ = 1580387688. Its totient is φ = 1053312000.

The previous prime is 1316814847. The next prime is 1316814887. The reversal of 1316814865 is 5684186131.

It can be written as a sum of positive squares in 4 ways, for example, as 70442449 + 1246372416 = 8393^2 + 35304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1316814865 - 2⁵ = 1316814833 is a prime.

It is a Duffinian number.

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, 42865 + ... + 66865.

It is an arithmetic number, because the mean of its divisors is an integer number (197548461).

Almost surely, 2^1316814865 is an apocalyptic number.

It is an amenable number.

1316814865 is a deficient number, since it is larger than the sum of its proper divisors (263572823).

1316814865 is a wasteful number, since it uses less digits than its factorization.

1316814865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34979.

The product of its digits is 138240, while the sum is 43.

The square root of 1316814865 is about 36287.9437968039. The cubic root of 1316814865 is about 1096.0782842412.

The spelling of 1316814865 in words is "one billion, three hundred sixteen million, eight hundred fourteen thousand, eight hundred sixty-five".