811018 has 8 divisors (see below), whose sum is σ = 1310148. Its totient is φ = 374304.

The previous prime is 810989. The next prime is 811037. The reversal of 811018 is 810118.

It can be written as a sum of positive squares in 2 ways, for example, as 779689 + 31329 = 883^2 + 177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 810986 and 811004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15571 + ... + 15622.

2⁸¹¹⁰¹⁸ is an apocalyptic number.

811018 is a deficient number, since it is larger than the sum of its proper divisors (499130).

811018 is a wasteful number, since it uses less digits than its factorization.

811018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31208.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 811018 is about 900.5653779710. The cubic root of 811018 is about 93.2560102215.

Subtracting from 811018 its reverse (810118), we obtain a square (900 = 30²).

It can be divided in two parts, 8110 and 18, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 811018 in words is "eight hundred eleven thousand, eighteen".