4181866 has 8 divisors (see below), whose sum is σ = 6755364. Its totient is φ = 1930080.

The previous prime is 4181857. The next prime is 4181867. The reversal of 4181866 is 6681814.

It can be written as a sum of positive squares in 2 ways, for example, as 4116841 + 65025 = 2029^2 + 255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4181867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80395 + ... + 80446.

Almost surely, 2^4181866 is an apocalyptic number.

4181866 is a deficient number, since it is larger than the sum of its proper divisors (2573498).

4181866 is a wasteful number, since it uses less digits than its factorization.

4181866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160856.

The product of its digits is 9216, while the sum is 34.

The square root of 4181866 is about 2044.9611243249. The cubic root of 4181866 is about 161.1103239315.

The spelling of 4181866 in words is "four million, one hundred eighty-one thousand, eight hundred sixty-six".