1444978975 has 72 divisors (see below), whose sum is σ = 2142640640. Its totient is φ = 962280000.

The previous prime is 1444978973. The next prime is 1444978987. The reversal of 1444978975 is 5798794441.

It is not a de Polignac number, because 1444978975 - 2¹ = 1444978973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444978973) 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 71 ways as a sum of consecutive naturals, for example, 1781320 + ... + 1782130.

Almost surely, 2^1444978975 is an apocalyptic number.

1444978975 is a deficient number, since it is larger than the sum of its proper divisors (697661665).

1444978975 is a wasteful number, since it uses less digits than its factorization.

1444978975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 877 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The square root of 1444978975 is about 38012.8790674950. The cubic root of 1444978975 is about 1130.5432360749.

The spelling of 1444978975 in words is "one billion, four hundred forty-four million, nine hundred seventy-eight thousand, nine hundred seventy-five".