1393361243 has 2 divisors, whose sum is σ = 1393361244. Its totient is φ = 1393361242.

The previous prime is 1393361227. The next prime is 1393361317. The reversal of 1393361243 is 3421633931.

It is a weak prime.

It is an emirp because it is prime and its reverse (3421633931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1393361243 - 2⁴ = 1393361227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1393361213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696680621 + 696680622.

It is an arithmetic number, because the mean of its divisors is an integer number (696680622).

Almost surely, 2^1393361243 is an apocalyptic number.

1393361243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393361243 is an equidigital number, since it uses as much as digits as its factorization.

1393361243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 35.

The square root of 1393361243 is about 37327.7543257025. The cubic root of 1393361243 is about 1116.9178768108.

The spelling of 1393361243 in words is "one billion, three hundred ninety-three million, three hundred sixty-one thousand, two hundred forty-three".