1803834 has 12 divisors (see below), whose sum is σ = 3908346. Its totient is φ = 601272.

The previous prime is 1803817. The next prime is 1803863. The reversal of 1803834 is 4383081.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 21609 = 1335^2 + 147^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1803798 and 1803807.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 50089 + ... + 50124.

2^1803834 is an apocalyptic number.

1803834 is an abundant number, since it is smaller than the sum of its proper divisors (2104512).

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

1803834 is a wasteful number, since it uses less digits than its factorization.

1803834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100221 (or 100218 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1803834 is about 1343.0688738855. The cubic root of 1803834 is about 121.7303459315.

The spelling of 1803834 in words is "one million, eight hundred three thousand, eight hundred thirty-four".