778873103 has 2 divisors, whose sum is σ = 778873104. Its totient is φ = 778873102.

The previous prime is 778873033. The next prime is 778873153. The reversal of 778873103 is 301378877.

It is a strong prime.

It is an emirp because it is prime and its reverse (301378877) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 778873103 - 2⁸ = 778872847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (778873153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389436551 + 389436552.

It is an arithmetic number, because the mean of its divisors is an integer number (389436552).

Almost surely, 2^778873103 is an apocalyptic number.

778873103 is a deficient number, since it is larger than the sum of its proper divisors (1).

778873103 is an equidigital number, since it uses as much as digits as its factorization.

778873103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 778873103 is about 27908.2981028941. The cubic root of 778873103 is about 920.0728923814.

The spelling of 778873103 in words is "seven hundred seventy-eight million, eight hundred seventy-three thousand, one hundred three".