1446645563 has 4 divisors (see below), whose sum is σ = 1578158808. Its totient is φ = 1315132320.

The previous prime is 1446645553. The next prime is 1446645569. The reversal of 1446645563 is 3655466441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1446645563 - 2¹⁰ = 1446644539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1446645569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65756606 + ... + 65756627.

It is an arithmetic number, because the mean of its divisors is an integer number (394539702).

Almost surely, 2^1446645563 is an apocalyptic number.

1446645563 is a deficient number, since it is larger than the sum of its proper divisors (131513245).

1446645563 is a wasteful number, since it uses less digits than its factorization.

1446645563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131513244.

The product of its digits is 1036800, while the sum is 44.

The square root of 1446645563 is about 38034.7941101303. The cubic root of 1446645563 is about 1130.9777120353.

The spelling of 1446645563 in words is "one billion, four hundred forty-six million, six hundred forty-five thousand, five hundred sixty-three".