1445644283 has 16 divisors (see below), whose sum is σ = 1582156800. Its totient is φ = 1315552896.

The previous prime is 1445644267. The next prime is 1445644309. The reversal of 1445644283 is 3824465441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1445644283 - 2⁴ = 1445644267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445644283.

It is not an unprimeable number, because it can be changed into a prime (1445647283) 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 in 15 ways as a sum of consecutive naturals, for example, 55418 + ... + 77216.

It is an arithmetic number, because the mean of its divisors is an integer number (98884800).

Almost surely, 2^1445644283 is an apocalyptic number.

1445644283 is a deficient number, since it is larger than the sum of its proper divisors (136512517).

1445644283 is a wasteful number, since it uses less digits than its factorization.

1445644283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21946.

The product of its digits is 368640, while the sum is 41.

The square root of 1445644283 is about 38021.6291471052. The cubic root of 1445644283 is about 1130.7167205024.

The spelling of 1445644283 in words is "one billion, four hundred forty-five million, six hundred forty-four thousand, two hundred eighty-three".