1838243 has 4 divisors (see below), whose sum is σ = 2005368. Its totient is φ = 1671120.

The previous prime is 1838237. The next prime is 1838257. The reversal of 1838243 is 3428381.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1838243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83546 + ... + 83567.

It is an arithmetic number, because the mean of its divisors is an integer number (501342).

2^1838243 is an apocalyptic number.

1838243 is a deficient number, since it is larger than the sum of its proper divisors (167125).

1838243 is a wasteful number, since it uses less digits than its factorization.

1838243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167124.

The product of its digits is 4608, while the sum is 29.

The square root of 1838243 is about 1355.8182031526. The cubic root of 1838243 is about 122.4994974296.

The spelling of 1838243 in words is "one million, eight hundred thirty-eight thousand, two hundred forty-three".