4418081 has 2 divisors, whose sum is σ = 4418082. Its totient is φ = 4418080.

The previous prime is 4418077. The next prime is 4418083. The reversal of 4418081 is 1808144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3763600 + 654481 = 1940^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 4418081 - 2² = 4418077 is a prime.

It is a super-2 number, since 2×4418081² = 39038879445122, which contains 22 as substring.

Together with 4418083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4418081.

It is not a weakly prime, because it can be changed into another prime (4418083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2209040 + 2209041.

It is an arithmetic number, because the mean of its divisors is an integer number (2209041).

Almost surely, 2^4418081 is an apocalyptic number.

It is an amenable number.

4418081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4418081 is an equidigital number, since it uses as much as digits as its factorization.

4418081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 4418081 is about 2101.9231670068. The cubic root of 4418081 is about 164.0884041516.

The spelling of 4418081 in words is "four million, four hundred eighteen thousand, eighty-one".