4163818 has 4 divisors (see below), whose sum is σ = 6245730. Its totient is φ = 2081908.

The previous prime is 4163813. The next prime is 4163821. The reversal of 4163818 is 8183614.

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

It can be written as a sum of positive squares in only one way, i.e., 4092529 + 71289 = 2023^2 + 267^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4163818.

It is not an unprimeable number, because it can be changed into a prime (4163813) by changing a digit.

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 as a sum of consecutive naturals, namely, 1040953 + ... + 1040956.

Almost surely, 2^4163818 is an apocalyptic number.

4163818 is a deficient number, since it is larger than the sum of its proper divisors (2081912).

4163818 is a wasteful number, since it uses less digits than its factorization.

4163818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081911.

The product of its digits is 4608, while the sum is 31.

The square root of 4163818 is about 2040.5435550363. The cubic root of 4163818 is about 160.8782176416.

The spelling of 4163818 in words is "four million, one hundred sixty-three thousand, eight hundred eighteen".