2643244001 has 4 divisors (see below), whose sum is σ = 2682695472. Its totient is φ = 2603792532.

The previous prime is 2643243983. The next prime is 2643244007. The reversal of 2643244001 is 1004423462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2643244001 - 2⁶ = 2643243937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643244007) 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 3 ways as a sum of consecutive naturals, for example, 19725635 + ... + 19725768.

It is an arithmetic number, because the mean of its divisors is an integer number (670673868).

Almost surely, 2^2643244001 is an apocalyptic number.

It is an amenable number.

2643244001 is a deficient number, since it is larger than the sum of its proper divisors (39451471).

2643244001 is an equidigital number, since it uses as much as digits as its factorization.

2643244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39451470.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2643244001 is about 51412.4887648906. The cubic root of 2643244001 is about 1382.6505107508.

Adding to 2643244001 its reverse (1004423462), we get a palindrome (3647667463).

The spelling of 2643244001 in words is "two billion, six hundred forty-three million, two hundred forty-four thousand, one".