918811 has 4 divisors (see below), whose sum is σ = 931824. Its totient is φ = 905800.

The previous prime is 918793. The next prime is 918823. The reversal of 918811 is 118819.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 918811 - 2⁵ = 918779 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 918811.

It is not an unprimeable number, because it can be changed into a prime (918011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (232956).

2⁹¹⁸⁸¹¹ is an apocalyptic number.

918811 is a deficient number, since it is larger than the sum of its proper divisors (13013).

918811 is a wasteful number, since it uses less digits than its factorization.

918811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13012.

The product of its digits is 576, while the sum is 28.

The square root of 918811 is about 958.5462951783. The cubic root of 918811 is about 97.2169657143.

The spelling of 918811 in words is "nine hundred eighteen thousand, eight hundred eleven".