1841 has 4 divisors (see below), whose sum is σ = 2112. Its totient is φ = 1572.

The previous prime is 1831. The next prime is 1847. The reversal of 1841 is 1481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1841 - 2⁶ = 1777 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1847) 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, 125 + ... + 138.

It is an arithmetic number, because the mean of its divisors is an integer number (528).

It is an amenable number.

1841 is a deficient number, since it is larger than the sum of its proper divisors (271).

1841 is an equidigital number, since it uses as much as digits as its factorization.

1841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its digits is 32, while the sum is 14.

The square root of 1841 is about 42.9068759058. The cubic root of 1841 is about 12.2560708490.

The spelling of 1841 in words is "one thousand, eight hundred forty-one".