778080893 has 2 divisors, whose sum is σ = 778080894. Its totient is φ = 778080892.

The previous prime is 778080773. The next prime is 778080917. The reversal of 778080893 is 398080877.

778080893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582836164 + 195244729 = 24142^2 + 13973^2 .

It is an emirp because it is prime and its reverse (398080877) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-778080893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (778083893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389040446 + 389040447.

It is an arithmetic number, because the mean of its divisors is an integer number (389040447).

Almost surely, 2^778080893 is an apocalyptic number.

It is an amenable number.

778080893 is a deficient number, since it is larger than the sum of its proper divisors (1).

778080893 is an equidigital number, since it uses as much as digits as its factorization.

778080893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 778080893 is about 27894.1014015508. The cubic root of 778080893 is about 919.7608440272.

The spelling of 778080893 in words is "seven hundred seventy-eight million, eighty thousand, eight hundred ninety-three".