1391133413 has 2 divisors, whose sum is σ = 1391133414. Its totient is φ = 1391133412.

The previous prime is 1391133397. The next prime is 1391133421. The reversal of 1391133413 is 3143311931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1386668644 + 4464769 = 37238^2 + 2113^2 .

It is an emirp because it is prime and its reverse (3143311931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1391133413 - 2⁴ = 1391133397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391133433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695566706 + 695566707.

It is an arithmetic number, because the mean of its divisors is an integer number (695566707).

Almost surely, 2^1391133413 is an apocalyptic number.

It is an amenable number.

1391133413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391133413 is an equidigital number, since it uses as much as digits as its factorization.

1391133413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The square root of 1391133413 is about 37297.9009194888. The cubic root of 1391133413 is about 1116.3222833568.

The spelling of 1391133413 in words is "one billion, three hundred ninety-one million, one hundred thirty-three thousand, four hundred thirteen".