1944281 has 2 divisors, whose sum is σ = 1944282. Its totient is φ = 1944280.

The previous prime is 1944223. The next prime is 1944287. The reversal of 1944281 is 1824491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032256 + 912025 = 1016^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944281 - 2¹⁰ = 1943257 is a prime.

It is a super-2 number, since 2×1944281² = 7560457213922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1944287) 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, 972140 + 972141.

It is an arithmetic number, because the mean of its divisors is an integer number (972141).

2^1944281 is an apocalyptic number.

It is an amenable number.

1944281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944281 is an equidigital number, since it uses as much as digits as its factorization.

1944281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 1944281 is about 1394.3747702824. The cubic root of 1944281 is about 124.8110425044.

The spelling of 1944281 in words is "one million, nine hundred forty-four thousand, two hundred eighty-one".