811338745 has 16 divisors (see below), whose sum is σ = 1113164928. Its totient is φ = 556110720.

The previous prime is 811338743. The next prime is 811338751. The reversal of 811338745 is 547833118.

811338745 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 811338745 - 2¹ = 811338743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 811338698 and 811338707.

It is not an unprimeable number, because it can be changed into a prime (811338743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134637 + ... + 140533.

It is an arithmetic number, because the mean of its divisors is an integer number (69572808).

Almost surely, 2^811338745 is an apocalyptic number.

It is an amenable number.

811338745 is a deficient number, since it is larger than the sum of its proper divisors (301826183).

811338745 is a wasteful number, since it uses less digits than its factorization.

811338745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9840.

The product of its digits is 80640, while the sum is 40.

The square root of 811338745 is about 28484.0085837650. The cubic root of 811338745 is about 932.6830236818.

The spelling of 811338745 in words is "eight hundred eleven million, three hundred thirty-eight thousand, seven hundred forty-five".