1844005 has 4 divisors (see below), whose sum is σ = 2212812. Its totient is φ = 1475200.

The previous prime is 1843999. The next prime is 1844021. The reversal of 1844005 is 5004481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5004481 = 353 ⋅14177.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 638401 = 1098^2 + 799^2 .

It is not a de Polignac number, because 1844005 - 2³ = 1843997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184396 + ... + 184405.

It is an arithmetic number, because the mean of its divisors is an integer number (553203).

2^1844005 is an apocalyptic number.

It is an amenable number.

1844005 is a deficient number, since it is larger than the sum of its proper divisors (368807).

1844005 is an equidigital number, since it uses as much as digits as its factorization.

1844005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368806.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1844005 is about 1357.9414567646. The cubic root of 1844005 is about 122.6273560959.

Adding to 1844005 its reverse (5004481), we get a palindrome (6848486).

The spelling of 1844005 in words is "one million, eight hundred forty-four thousand, five".