1845844 has 48 divisors (see below), whose sum is σ = 4346496. Its totient is φ = 662400.

The previous prime is 1845841. The next prime is 1845881. The reversal of 1845844 is 4485481.

1845844 = T₁₃₄ + T₁₃₅ + ... + T₂₃₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3774 + ... + 4234.

It is an arithmetic number, because the mean of its divisors is an integer number (90552).

2^1845844 is an apocalyptic number.

1845844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1845844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173248).

1845844 is an abundant number, since it is smaller than the sum of its proper divisors (2500652).

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

1845844 is a wasteful number, since it uses less digits than its factorization.

1845844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 1845844 is about 1358.6184158917. The cubic root of 1845844 is about 122.6681073922.

The spelling of 1845844 in words is "one million, eight hundred forty-five thousand, eight hundred forty-four".