1944143 has 2 divisors, whose sum is σ = 1944144. Its totient is φ = 1944142.

The previous prime is 1944133. The next prime is 1944157. The reversal of 1944143 is 3414491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1944143 - 2⁴ = 1944127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972071 + 972072.

It is an arithmetic number, because the mean of its divisors is an integer number (972072).

2^1944143 is an apocalyptic number.

1944143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944143 is an equidigital number, since it uses as much as digits as its factorization.

1944143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 1944143 is about 1394.3252848600. The cubic root of 1944143 is about 124.8080895137.

The spelling of 1944143 in words is "one million, nine hundred forty-four thousand, one hundred forty-three".