1324111643 has 2 divisors, whose sum is σ = 1324111644. Its totient is φ = 1324111642.

The previous prime is 1324111631. The next prime is 1324111661. The reversal of 1324111643 is 3461114231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1324111643 - 2²⁰ = 1323063067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1324111673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662055821 + 662055822.

It is an arithmetic number, because the mean of its divisors is an integer number (662055822).

Almost surely, 2^1324111643 is an apocalyptic number.

1324111643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324111643 is an equidigital number, since it uses as much as digits as its factorization.

1324111643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 1324111643 is about 36388.3448785459. The cubic root of 1324111643 is about 1098.0990979489.

Adding to 1324111643 its reverse (3461114231), we get a palindrome (4785225874).

The spelling of 1324111643 in words is "one billion, three hundred twenty-four million, one hundred eleven thousand, six hundred forty-three".