1445223344 has 20 divisors (see below), whose sum is σ = 2816892624. Its totient is φ = 718283328.

The previous prime is 1445223343. The next prime is 1445223347. The reversal of 1445223344 is 4433225441.

It is a self number, because there is not a number n which added to its sum of digits gives 1445223344.

It is not an unprimeable number, because it can be changed into a prime (1445223341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267767 + ... + 273110.

Almost surely, 2^1445223344 is an apocalyptic number.

It is an amenable number.

1445223344 is a deficient number, since it is larger than the sum of its proper divisors (1371669280).

1445223344 is a wasteful number, since it uses less digits than its factorization.

1445223344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541052 (or 541046 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

The square root of 1445223344 is about 38016.0932237914. The cubic root of 1445223344 is about 1130.6069634492.

Adding to 1445223344 its reverse (4433225441), we get a palindrome (5878448785).

The spelling of 1445223344 in words is "one billion, four hundred forty-five million, two hundred twenty-three thousand, three hundred forty-four".