1322168561 has 16 divisors (see below), whose sum is σ = 1597747200. Its totient is φ = 1068802128.

The previous prime is 1322168539. The next prime is 1322168567. The reversal of 1322168561 is 1658612231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322168561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1322168567) 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 15 ways as a sum of consecutive naturals, for example, 7370 + ... + 51948.

It is an arithmetic number, because the mean of its divisors is an integer number (99859200).

Almost surely, 2^1322168561 is an apocalyptic number.

It is an amenable number.

1322168561 is a deficient number, since it is larger than the sum of its proper divisors (275578639).

1322168561 is a wasteful number, since it uses less digits than its factorization.

1322168561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44828.

The product of its digits is 17280, while the sum is 35.

The square root of 1322168561 is about 36361.6358405394. The cubic root of 1322168561 is about 1097.5616958449.

The spelling of 1322168561 in words is "one billion, three hundred twenty-two million, one hundred sixty-eight thousand, five hundred sixty-one".