811686118 has 12 divisors (see below), whose sum is σ = 1284983460. Its totient is φ = 384482556.

The previous prime is 811686107. The next prime is 811686163.

811686118 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 561388 + ... + 562831.

It is an arithmetic number, because the mean of its divisors is an integer number (107081955).

Almost surely, 2^811686118 is an apocalyptic number.

811686118 is a deficient number, since it is larger than the sum of its proper divisors (473297342).

811686118 is a wasteful number, since it uses less digits than its factorization.

811686118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124259 (or 1124240 counting only the distinct ones).

The product of its digits is 18432, while the sum is 40.

The square root of 811686118 is about 28490.1056158099. The cubic root of 811686118 is about 932.8161134566.

The spelling of 811686118 in words is "eight hundred eleven million, six hundred eighty-six thousand, one hundred eighteen".