1944440011 has 2 divisors, whose sum is σ = 1944440012. Its totient is φ = 1944440010.

The previous prime is 1944439999. The next prime is 1944440039. The reversal of 1944440011 is 1100444491.

It is an a-pointer prime, because the next prime (1944440039) can be obtained adding 1944440011 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1944440011 - 2¹⁵ = 1944407243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1944440711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972220005 + 972220006.

It is an arithmetic number, because the mean of its divisors is an integer number (972220006).

Almost surely, 2^1944440011 is an apocalyptic number.

1944440011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944440011 is an equidigital number, since it uses as much as digits as its factorization.

1944440011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1944440011 is about 44095.8049138464. The cubic root of 1944440011 is about 1248.1444492548.

The spelling of 1944440011 in words is "one billion, nine hundred forty-four million, four hundred forty thousand, eleven".