1364961391 has 2 divisors, whose sum is σ = 1364961392. Its totient is φ = 1364961390.

The previous prime is 1364961379. The next prime is 1364961419. The reversal of 1364961391 is 1931694631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1364961391 - 2⁵ = 1364961359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1364961371) 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, 682480695 + 682480696.

It is an arithmetic number, because the mean of its divisors is an integer number (682480696).

Almost surely, 2^1364961391 is an apocalyptic number.

1364961391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364961391 is an equidigital number, since it uses as much as digits as its factorization.

1364961391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 1364961391 is about 36945.3838929845. The cubic root of 1364961391 is about 1109.2772913705.

The spelling of 1364961391 in words is "one billion, three hundred sixty-four million, nine hundred sixty-one thousand, three hundred ninety-one".