1806838 has 8 divisors (see below), whose sum is σ = 2956680. Its totient is φ = 821280.

The previous prime is 1806803. The next prime is 1806839. The reversal of 1806838 is 8386081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806839) 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 in 3 ways as a sum of consecutive naturals, for example, 41043 + ... + 41086.

It is an arithmetic number, because the mean of its divisors is an integer number (369585).

2^1806838 is an apocalyptic number.

1806838 is a deficient number, since it is larger than the sum of its proper divisors (1149842).

1806838 is a wasteful number, since it uses less digits than its factorization.

1806838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82142.

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

The square root of 1806838 is about 1344.1867429788. The cubic root of 1806838 is about 121.7978826623.

The spelling of 1806838 in words is "one million, eight hundred six thousand, eight hundred thirty-eight".