1848139 has 4 divisors (see below), whose sum is σ = 1853280. Its totient is φ = 1843000.

The previous prime is 1848107. The next prime is 1848151. The reversal of 1848139 is 9318481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1848139 - 2⁵ = 1848107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1848169) 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 3 ways as a sum of consecutive naturals, for example, 1987 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (463320).

2^1848139 is an apocalyptic number.

1848139 is a deficient number, since it is larger than the sum of its proper divisors (5141).

1848139 is an equidigital number, since it uses as much as digits as its factorization.

1848139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140.

The product of its digits is 6912, while the sum is 34.

The square root of 1848139 is about 1359.4627615349. The cubic root of 1848139 is about 122.7189254663.

The spelling of 1848139 in words is "one million, eight hundred forty-eight thousand, one hundred thirty-nine".