3805818 has 16 divisors (see below), whose sum is σ = 7698240. Its totient is φ = 1254176.

The previous prime is 3805817. The next prime is 3805819. The reversal of 3805818 is 8185083.

3805818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3805817) and next prime (3805819).

It is not an unprimeable number, because it can be changed into a prime (3805811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030 + ... + 4097.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

Almost surely, 2^3805818 is an apocalyptic number.

3805818 is an abundant number, since it is smaller than the sum of its proper divisors (3892422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3805818 is a wasteful number, since it uses less digits than its factorization.

3805818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 3805818 is about 1950.8505837198. The cubic root of 3805818 is about 156.1286742434.

The spelling of 3805818 in words is "three million, eight hundred five thousand, eight hundred eighteen".