1983843 has 12 divisors (see below), whose sum is σ = 2920320. Its totient is φ = 1297296.

The previous prime is 1983833. The next prime is 1983851. The reversal of 1983843 is 3483891.

It is not a de Polignac number, because 1983843 - 2⁸ = 1983587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1983798 and 1983807.

It is not an unprimeable number, because it can be changed into a prime (1983833) 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 11 ways as a sum of consecutive naturals, for example, 1603 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (243360).

2^1983843 is an apocalyptic number.

1983843 is a deficient number, since it is larger than the sum of its proper divisors (936477).

1983843 is a wasteful number, since it uses less digits than its factorization.

1983843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218 (or 4215 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1983843 is about 1408.4896165751. The cubic root of 1983843 is about 125.6519115139.

It can be divided in two parts, 19838 and 43, that added together give a square (19881 = 141²).

The spelling of 1983843 in words is "one million, nine hundred eighty-three thousand, eight hundred forty-three".