1316271893 has 2 divisors, whose sum is σ = 1316271894. Its totient is φ = 1316271892.

The previous prime is 1316271881. The next prime is 1316271919. The reversal of 1316271893 is 3981726131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1085900209 + 230371684 = 32953^2 + 15178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316271893 - 2⁴ = 1316271877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316271893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316271823) 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 as a sum of consecutive naturals, namely, 658135946 + 658135947.

It is an arithmetic number, because the mean of its divisors is an integer number (658135947).

Almost surely, 2^1316271893 is an apocalyptic number.

It is an amenable number.

1316271893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316271893 is an equidigital number, since it uses as much as digits as its factorization.

1316271893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 1316271893 is about 36280.4615874716. The cubic root of 1316271893 is about 1095.9276121783.

The spelling of 1316271893 in words is "one billion, three hundred sixteen million, two hundred seventy-one thousand, eight hundred ninety-three".