1444041649 has 2 divisors, whose sum is σ = 1444041650. Its totient is φ = 1444041648.

The previous prime is 1444041647. The next prime is 1444041679. The reversal of 1444041649 is 9461404441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819791424 + 624250225 = 28632^2 + 24985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444041649 - 2¹ = 1444041647 is a prime.

Together with 1444041647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1444041647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722020824 + 722020825.

It is an arithmetic number, because the mean of its divisors is an integer number (722020825).

Almost surely, 2^1444041649 is an apocalyptic number.

It is an amenable number.

1444041649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444041649 is an equidigital number, since it uses as much as digits as its factorization.

1444041649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 1444041649 is about 38000.5480092064. The cubic root of 1444041649 is about 1130.2987303757.

The spelling of 1444041649 in words is "one billion, four hundred forty-four million, forty-one thousand, six hundred forty-nine".