810900943 has 12 divisors (see below), whose sum is σ = 858347280. Its totient is φ = 765959616.

The previous prime is 810900941. The next prime is 810900947. The reversal of 810900943 is 349009018.

It is not a de Polignac number, because 810900943 - 2¹ = 810900941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 810900899 and 810900908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810900941) 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 11 ways as a sum of consecutive naturals, for example, 126471 + ... + 132727.

It is an arithmetic number, because the mean of its divisors is an integer number (71528940).

Almost surely, 2^810900943 is an apocalyptic number.

810900943 is a deficient number, since it is larger than the sum of its proper divisors (47446337).

810900943 is a wasteful number, since it uses less digits than its factorization.

810900943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6654 (or 6635 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 810900943 is about 28476.3224978226. The cubic root of 810900943 is about 932.5152335270.

The spelling of 810900943 in words is "eight hundred ten million, nine hundred thousand, nine hundred forty-three".