1806894 has 16 divisors (see below), whose sum is σ = 4015440. Its totient is φ = 602280.

The previous prime is 1806887. The next prime is 1806899. The reversal of 1806894 is 4986081.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16677 + ... + 16784.

It is an arithmetic number, because the mean of its divisors is an integer number (250965).

2^1806894 is an apocalyptic number.

1806894 is an abundant number, since it is smaller than the sum of its proper divisors (2208546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1806894 is a wasteful number, since it uses less digits than its factorization.

1806894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33472 (or 33466 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1806894 is about 1344.2075732565. The cubic root of 1806894 is about 121.7991409583.

The spelling of 1806894 in words is "one million, eight hundred six thousand, eight hundred ninety-four".