2543351813 has 2 divisors, whose sum is σ = 2543351814. Its totient is φ = 2543351812.

The previous prime is 2543351791. The next prime is 2543351887. The reversal of 2543351813 is 3181533452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2504201764 + 39150049 = 50042^2 + 6257^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543351813 - 2¹² = 2543347717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543350813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271675906 + 1271675907.

It is an arithmetic number, because the mean of its divisors is an integer number (1271675907).

Almost surely, 2^2543351813 is an apocalyptic number.

It is an amenable number.

2543351813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543351813 is an equidigital number, since it uses as much as digits as its factorization.

2543351813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 2543351813 is about 50431.6548707258. The cubic root of 2543351813 is about 1365.0088891888.

The spelling of 2543351813 in words is "two billion, five hundred forty-three million, three hundred fifty-one thousand, eight hundred thirteen".