1316946817 has 2 divisors, whose sum is σ = 1316946818. Its totient is φ = 1316946816.

The previous prime is 1316946779. The next prime is 1316946821. The reversal of 1316946817 is 7186496131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221083136 + 95863681 = 34944^2 + 9791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316946817 - 2⁷ = 1316946689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1316946017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658473408 + 658473409.

It is an arithmetic number, because the mean of its divisors is an integer number (658473409).

Almost surely, 2^1316946817 is an apocalyptic number.

It is an amenable number.

1316946817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316946817 is an equidigital number, since it uses as much as digits as its factorization.

1316946817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 1316946817 is about 36289.7618757688. The cubic root of 1316946817 is about 1096.1148940171.

The spelling of 1316946817 in words is "one billion, three hundred sixteen million, nine hundred forty-six thousand, eight hundred seventeen".