2808345847 has 2 divisors, whose sum is σ = 2808345848. Its totient is φ = 2808345846.

The previous prime is 2808345829. The next prime is 2808345871. The reversal of 2808345847 is 7485438082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2808345847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2808345847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808345047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404172923 + 1404172924.

It is an arithmetic number, because the mean of its divisors is an integer number (1404172924).

Almost surely, 2^2808345847 is an apocalyptic number.

2808345847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808345847 is an equidigital number, since it uses as much as digits as its factorization.

2808345847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1720320, while the sum is 49.

The square root of 2808345847 is about 52993.8283859545. The cubic root of 2808345847 is about 1410.8587306285.

The spelling of 2808345847 in words is "two billion, eight hundred eight million, three hundred forty-five thousand, eight hundred forty-seven".