2809641343 has 2 divisors, whose sum is σ = 2809641344. Its totient is φ = 2809641342.

The previous prime is 2809641299. The next prime is 2809641377. The reversal of 2809641343 is 3431469082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2809641343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2809641296 and 2809641305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2809641143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404820671 + 1404820672.

It is an arithmetic number, because the mean of its divisors is an integer number (1404820672).

Almost surely, 2^2809641343 is an apocalyptic number.

2809641343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2809641343 is an equidigital number, since it uses as much as digits as its factorization.

2809641343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 2809641343 is about 53006.0500603469. The cubic root of 2809641343 is about 1411.0756413372.

The spelling of 2809641343 in words is "two billion, eight hundred nine million, six hundred forty-one thousand, three hundred forty-three".