1938243 has 8 divisors (see below), whose sum is σ = 2623168. Its totient is φ = 1272744.

The previous prime is 1938239. The next prime is 1938253. The reversal of 1938243 is 3428391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1938243 - 2² = 1938239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938243.

It is not an unprimeable number, because it can be changed into a prime (1938203) 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, 4621 + ... + 5022.

It is an arithmetic number, because the mean of its divisors is an integer number (327896).

2^1938243 is an apocalyptic number.

1938243 is a deficient number, since it is larger than the sum of its proper divisors (684925).

1938243 is an equidigital number, since it uses as much as digits as its factorization.

1938243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713.

The product of its digits is 5184, while the sum is 30.

The square root of 1938243 is about 1392.2079586039. The cubic root of 1938243 is about 124.6817075405.

The spelling of 1938243 in words is "one million, nine hundred thirty-eight thousand, two hundred forty-three".