5143662809 has 2 divisors, whose sum is σ = 5143662810. Its totient is φ = 5143662808.

The previous prime is 5143662793. The next prime is 5143662833. The reversal of 5143662809 is 9082663415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4816776409 + 326886400 = 69403^2 + 18080^2 .

It is a cyclic number.

It is not a de Polignac number, because 5143662809 - 2⁴ = 5143662793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5143662809.

It is not a weakly prime, because it can be changed into another prime (5143662859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571831404 + 2571831405.

It is an arithmetic number, because the mean of its divisors is an integer number (2571831405).

Almost surely, 2^5143662809 is an apocalyptic number.

It is an amenable number.

5143662809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5143662809 is an equidigital number, since it uses as much as digits as its factorization.

5143662809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 5143662809 is about 71719.3335788893. Note that the first 3 decimals coincide. The cubic root of 5143662809 is about 1726.1988791365.

The spelling of 5143662809 in words is "five billion, one hundred forty-three million, six hundred sixty-two thousand, eight hundred nine".