1444065648 has 40 divisors (see below), whose sum is σ = 3777734400. Its totient is φ = 475260864.

The previous prime is 1444065641. The next prime is 1444065739. The reversal of 1444065648 is 8465604441.

It is a happy number.

It is a super-3 number, since 3×1444065648³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444065641) 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 in 7 ways as a sum of consecutive naturals, for example, 186618 + ... + 194201.

It is an arithmetic number, because the mean of its divisors is an integer number (94443360).

Almost surely, 2^1444065648 is an apocalyptic number.

It is an amenable number.

1444065648 is an abundant number, since it is smaller than the sum of its proper divisors (2333668752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444065648 is a wasteful number, since it uses less digits than its factorization.

1444065648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380909 (or 380903 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The square root of 1444065648 is about 38000.8637796564. The cubic root of 1444065648 is about 1130.3049919423.

The spelling of 1444065648 in words is "one billion, four hundred forty-four million, sixty-five thousand, six hundred forty-eight".