1312793893 has 2 divisors, whose sum is σ = 1312793894. Its totient is φ = 1312793892.

The previous prime is 1312793887. The next prime is 1312793897. The reversal of 1312793893 is 3983972131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291467969 + 21325924 = 35937^2 + 4618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312793893 - 2⁵ = 1312793861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312793897) 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, 656396946 + 656396947.

It is an arithmetic number, because the mean of its divisors is an integer number (656396947).

Almost surely, 2^1312793893 is an apocalyptic number.

It is an amenable number.

1312793893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312793893 is an equidigital number, since it uses as much as digits as its factorization.

1312793893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 1312793893 is about 36232.4977471882. The cubic root of 1312793893 is about 1094.9615001441.

The spelling of 1312793893 in words is "one billion, three hundred twelve million, seven hundred ninety-three thousand, eight hundred ninety-three".