1622246321 has 2 divisors, whose sum is σ = 1622246322. Its totient is φ = 1622246320.

The previous prime is 1622246299. The next prime is 1622246323. The reversal of 1622246321 is 1236422261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364194225 + 258052096 = 36935^2 + 16064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1622246321 is a prime.

Together with 1622246323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1622246323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811123160 + 811123161.

It is an arithmetic number, because the mean of its divisors is an integer number (811123161).

Almost surely, 2^1622246321 is an apocalyptic number.

It is an amenable number.

1622246321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622246321 is an equidigital number, since it uses as much as digits as its factorization.

1622246321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 1622246321 is about 40277.1190752268. The cubic root of 1622246321 is about 1175.0028841939.

Adding to 1622246321 its reverse (1236422261), we get a palindrome (2858668582).

The spelling of 1622246321 in words is "one billion, six hundred twenty-two million, two hundred forty-six thousand, three hundred twenty-one".