2543912993 has 2 divisors, whose sum is σ = 2543912994. Its totient is φ = 2543912992.

The previous prime is 2543912947. The next prime is 2543913013. The reversal of 2543912993 is 3992193452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1376187409 + 1167725584 = 37097^2 + 34172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543912993 - 2¹⁰ = 2543911969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2543912093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271956496 + 1271956497.

It is an arithmetic number, because the mean of its divisors is an integer number (1271956497).

Almost surely, 2^2543912993 is an apocalyptic number.

It is an amenable number.

2543912993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543912993 is an equidigital number, since it uses as much as digits as its factorization.

2543912993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 47.

The square root of 2543912993 is about 50437.2183313077. The cubic root of 2543912993 is about 1365.1092763173.

The spelling of 2543912993 in words is "two billion, five hundred forty-three million, nine hundred twelve thousand, nine hundred ninety-three".