1445622322 has 4 divisors (see below), whose sum is σ = 2168433486. Its totient is φ = 722811160.

The previous prime is 1445622293. The next prime is 1445622377. The reversal of 1445622322 is 2232265441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2232265441 = 7 ⋅318895063.

It can be written as a sum of positive squares in only one way, i.e., 1300395721 + 145226601 = 36061^2 + 12051^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361405579 + ... + 361405582.

Almost surely, 2^1445622322 is an apocalyptic number.

1445622322 is a deficient number, since it is larger than the sum of its proper divisors (722811164).

1445622322 is an equidigital number, since it uses as much as digits as its factorization.

1445622322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722811163.

The product of its digits is 23040, while the sum is 31.

The square root of 1445622322 is about 38021.3403498614. The cubic root of 1445622322 is about 1130.7109948441.

Adding to 1445622322 its reverse (2232265441), we get a palindrome (3677887763).

The spelling of 1445622322 in words is "one billion, four hundred forty-five million, six hundred twenty-two thousand, three hundred twenty-two".