780854945 has 32 divisors (see below), whose sum is σ = 1075479552. Its totient is φ = 539776512.

The previous prime is 780854929. The next prime is 780854969. The reversal of 780854945 is 549458087.

780854945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 780854945 - 2⁴ = 780854929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780854893 and 780854902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64709 + ... + 75821.

It is an arithmetic number, because the mean of its divisors is an integer number (33608736).

Almost surely, 2^780854945 is an apocalyptic number.

It is an amenable number.

780854945 is a deficient number, since it is larger than the sum of its proper divisors (294624607).

780854945 is a wasteful number, since it uses less digits than its factorization.

780854945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11201.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 780854945 is about 27943.7818664547. The cubic root of 780854945 is about 920.8526063455.

The spelling of 780854945 in words is "seven hundred eighty million, eight hundred fifty-four thousand, nine hundred forty-five".