778965941 has 16 divisors (see below), whose sum is σ = 860961024. Its totient is φ = 700225344.

The previous prime is 778965937. The next prime is 778965947. The reversal of 778965941 is 149569877.

It is not a de Polignac number, because 778965941 - 2² = 778965937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778965947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203255 + ... + 207051.

It is an arithmetic number, because the mean of its divisors is an integer number (53810064).

Almost surely, 2^778965941 is an apocalyptic number.

It is an amenable number.

778965941 is a deficient number, since it is larger than the sum of its proper divisors (81995083).

778965941 is a wasteful number, since it uses less digits than its factorization.

778965941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220.

The product of its digits is 3810240, while the sum is 56.

The square root of 778965941 is about 27909.9613220800. The cubic root of 778965941 is about 920.1094470454.

The spelling of 778965941 in words is "seven hundred seventy-eight million, nine hundred sixty-five thousand, nine hundred forty-one".