1321422793 has 2 divisors, whose sum is σ = 1321422794. Its totient is φ = 1321422792.

The previous prime is 1321422731. The next prime is 1321422797. The reversal of 1321422793 is 3972241231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187974089 + 133448704 = 34467^2 + 11552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321422793 - 2²¹ = 1319325641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321422797) 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, 660711396 + 660711397.

It is an arithmetic number, because the mean of its divisors is an integer number (660711397).

Almost surely, 2^1321422793 is an apocalyptic number.

It is an amenable number.

1321422793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321422793 is an equidigital number, since it uses as much as digits as its factorization.

1321422793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 1321422793 is about 36351.3795199027. The cubic root of 1321422793 is about 1097.3552974679.

The spelling of 1321422793 in words is "one billion, three hundred twenty-one million, four hundred twenty-two thousand, seven hundred ninety-three".