2543303813 has 2 divisors, whose sum is σ = 2543303814. Its totient is φ = 2543303812.

The previous prime is 2543303773. The next prime is 2543303827. The reversal of 2543303813 is 3183033452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2375782564 + 167521249 = 48742^2 + 12943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543303813 - 2⁸ = 2543303557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2543303813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543303863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271651906 + 1271651907.

It is an arithmetic number, because the mean of its divisors is an integer number (1271651907).

Almost surely, 2^2543303813 is an apocalyptic number.

It is an amenable number.

2543303813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543303813 is an equidigital number, since it uses as much as digits as its factorization.

2543303813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2543303813 is about 50431.1789768988. The cubic root of 2543303813 is about 1365.0003019853. Note that the first 3 decimals are identical.

The spelling of 2543303813 in words is "two billion, five hundred forty-three million, three hundred three thousand, eight hundred thirteen".