1322155643 has 8 divisors (see below), whose sum is σ = 1329230496. Its totient is φ = 1315094400.

The previous prime is 1322155607. The next prime is 1322155651. The reversal of 1322155643 is 3465512231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1322155643 - 2⁶ = 1322155579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322155693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234113 + ... + 239693.

It is an arithmetic number, because the mean of its divisors is an integer number (166153812).

Almost surely, 2^1322155643 is an apocalyptic number.

1322155643 is a deficient number, since it is larger than the sum of its proper divisors (7074853).

1322155643 is an equidigital number, since it uses as much as digits as its factorization.

1322155643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805.

The product of its digits is 21600, while the sum is 32.

The square root of 1322155643 is about 36361.4582078332. The cubic root of 1322155643 is about 1097.5581213263.

Adding to 1322155643 its reverse (3465512231), we get a palindrome (4787667874).

The spelling of 1322155643 in words is "one billion, three hundred twenty-two million, one hundred fifty-five thousand, six hundred forty-three".