1323422644 has 12 divisors (see below), whose sum is σ = 2321060644. Its totient is φ = 660262464.

The previous prime is 1323422629. The next prime is 1323422669. The reversal of 1323422644 is 4462243231.

It can be written as a sum of positive squares in 2 ways, for example, as 616926244 + 706496400 = 24838^2 + 26580^2 .

It is a congruent number.

It is an unprimeable number.

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, 360159 + ... + 363814.

Almost surely, 2^1323422644 is an apocalyptic number.

It is an amenable number.

1323422644 is a deficient number, since it is larger than the sum of its proper divisors (997638000).

1323422644 is a wasteful number, since it uses less digits than its factorization.

1323422644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724434 (or 724432 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

The square root of 1323422644 is about 36378.8763432847. The cubic root of 1323422644 is about 1097.9086003041.

Adding to 1323422644 its reverse (4462243231), we get a palindrome (5785665875).

The spelling of 1323422644 in words is "one billion, three hundred twenty-three million, four hundred twenty-two thousand, six hundred forty-four".