1841866 has 8 divisors (see below), whose sum is σ = 2975364. Its totient is φ = 850080.

The previous prime is 1841857. The next prime is 1841869. The reversal of 1841866 is 6681481.

It can be written as a sum of positive squares in 2 ways, for example, as 1766241 + 75625 = 1329^2 + 275^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1841869) 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, 35395 + ... + 35446.

2^1841866 is an apocalyptic number.

1841866 is a deficient number, since it is larger than the sum of its proper divisors (1133498).

1841866 is a wasteful number, since it uses less digits than its factorization.

1841866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70856.

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

The square root of 1841866 is about 1357.1536390549. The cubic root of 1841866 is about 122.5799228549.

The spelling of 1841866 in words is "one million, eight hundred forty-one thousand, eight hundred sixty-six".