810426983 has 4 divisors (see below), whose sum is σ = 810517248. Its totient is φ = 810336720.

The previous prime is 810426973. The next prime is 810426989. The reversal of 810426983 is 389624018.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 810426983 - 2¹⁴ = 810410599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810426983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810426989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29966 + ... + 50187.

It is an arithmetic number, because the mean of its divisors is an integer number (202629312).

Almost surely, 2^810426983 is an apocalyptic number.

810426983 is a deficient number, since it is larger than the sum of its proper divisors (90265).

810426983 is a wasteful number, since it uses less digits than its factorization.

810426983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90264.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 810426983 is about 28467.9992798932. Note that the first 3 decimals coincide. The cubic root of 810426983 is about 932.3335175146. Note that the first 3 decimals are identical.

Adding to 810426983 its sum of digits (41), we get a square (810427024 = 28468²).

The spelling of 810426983 in words is "eight hundred ten million, four hundred twenty-six thousand, nine hundred eighty-three".