4161818 has 16 divisors (see below), whose sum is σ = 6402240. Its totient is φ = 2028576.

The previous prime is 4161811. The next prime is 4161823. The reversal of 4161818 is 8181614.

4161818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

4161818 is a modest number, since divided by 1818 gives 416 as remainder.

It is not an unprimeable number, because it can be changed into a prime (4161811) 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, 18221 + ... + 18447.

It is an arithmetic number, because the mean of its divisors is an integer number (400140).

Almost surely, 2^4161818 is an apocalyptic number.

4161818 is a deficient number, since it is larger than the sum of its proper divisors (2240422).

4161818 is a wasteful number, since it uses less digits than its factorization.

4161818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its digits is 1536, while the sum is 29.

The square root of 4161818 is about 2040.0534306728. The cubic root of 4161818 is about 160.8524553912.

The spelling of 4161818 in words is "four million, one hundred sixty-one thousand, eight hundred eighteen".