1804841 has 2 divisors, whose sum is σ = 1804842. Its totient is φ = 1804840.

The previous prime is 1804819. The next prime is 1804871. The reversal of 1804841 is 1484081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 958441 + 846400 = 979^2 + 920^2 .

It is an emirp because it is prime and its reverse (1484081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1804841 - 2¹⁰ = 1803817 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1804841.

It is not a weakly prime, because it can be changed into another prime (1804801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902420 + 902421.

It is an arithmetic number, because the mean of its divisors is an integer number (902421).

2^1804841 is an apocalyptic number.

It is an amenable number.

1804841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804841 is an equidigital number, since it uses as much as digits as its factorization.

1804841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 1804841 is about 1343.4437092785. The cubic root of 1804841 is about 121.7529939236.

The spelling of 1804841 in words is "one million, eight hundred four thousand, eight hundred forty-one".