1844 has 6 divisors (see below), whose sum is σ = 3234. Its totient is φ = 920.

The previous prime is 1831. The next prime is 1847. The reversal of 1844 is 4481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1444 + 400 = 38^2 + 20^2 .

It is a plaindrome in base 9 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1847) by changing a digit.

1844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227 + ... + 234.

It is an arithmetic number, because the mean of its divisors is an integer number (539).

It is an amenable number.

1844 is a deficient number, since it is larger than the sum of its proper divisors (1390).

1844 is a wasteful number, since it uses less digits than its factorization.

1844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 463 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 1844 is about 42.9418211072. The cubic root of 1844 is about 12.2627245262.

The spelling of 1844 in words is "one thousand, eight hundred forty-four".