1313926218733 has 2 divisors, whose sum is σ = 1313926218734. Its totient is φ = 1313926218732.

The previous prime is 1313926218691. The next prime is 1313926218767. The reversal of 1313926218733 is 3378126293131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275323007204 + 38603211529 = 1129302^2 + 196477^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313926218733 - 2²⁹ = 1313389347821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313926218533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656963109366 + 656963109367.

It is an arithmetic number, because the mean of its divisors is an integer number (656963109367).

Almost surely, 2^{1313926218733} is an apocalyptic number.

It is an amenable number.

1313926218733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313926218733 is an equidigital number, since it uses as much as digits as its factorization.

1313926218733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The spelling of 1313926218733 in words is "one trillion, three hundred thirteen billion, nine hundred twenty-six million, two hundred eighteen thousand, seven hundred thirty-three".