2543386393 has 2 divisors, whose sum is σ = 2543386394. Its totient is φ = 2543386392.

The previous prime is 2543386387. The next prime is 2543386411. The reversal of 2543386393 is 3936833452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1473638544 + 1069747849 = 38388^2 + 32707^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543386393 - 2⁵ = 2543386361 is a prime.

It is not a weakly prime, because it can be changed into another prime (2543380393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271693196 + 1271693197.

It is an arithmetic number, because the mean of its divisors is an integer number (1271693197).

Almost surely, 2^2543386393 is an apocalyptic number.

It is an amenable number.

2543386393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543386393 is an equidigital number, since it uses as much as digits as its factorization.

2543386393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 46.

The square root of 2543386393 is about 50431.9977097874. The cubic root of 2543386393 is about 1365.0150754864.

The spelling of 2543386393 in words is "two billion, five hundred forty-three million, three hundred eighty-six thousand, three hundred ninety-three".