1843138 has 16 divisors (see below), whose sum is σ = 3038400. Its totient is φ = 831600.

The previous prime is 1843129. The next prime is 1843139. The reversal of 1843138 is 8313481.

It is not an unprimeable number, because it can be changed into a prime (1843139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4168 + ... + 4588.

It is an arithmetic number, because the mean of its divisors is an integer number (189900).

2^1843138 is an apocalyptic number.

1843138 is a deficient number, since it is larger than the sum of its proper divisors (1195262).

1843138 is a wasteful number, since it uses less digits than its factorization.

1843138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its digits is 2304, while the sum is 28.

The square root of 1843138 is about 1357.6221860297. The cubic root of 1843138 is about 122.6081344226.

The spelling of 1843138 in words is "one million, eight hundred forty-three thousand, one hundred thirty-eight".