2644453423 has 4 divisors (see below), whose sum is σ = 2646369688. Its totient is φ = 2642537160.

The previous prime is 2644453417. The next prime is 2644453439. The reversal of 2644453423 is 3243544462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2644453423 - 2⁹ = 2644452911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644453403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956061 + ... + 958822.

It is an arithmetic number, because the mean of its divisors is an integer number (661592422).

Almost surely, 2^2644453423 is an apocalyptic number.

2644453423 is a deficient number, since it is larger than the sum of its proper divisors (1916265).

2644453423 is a wasteful number, since it uses less digits than its factorization.

2644453423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916264.

The product of its digits is 276480, while the sum is 37.

The square root of 2644453423 is about 51424.2493673948. The cubic root of 2644453423 is about 1382.8613568386.

Adding to 2644453423 its reverse (3243544462), we get a palindrome (5887997885).

The spelling of 2644453423 in words is "two billion, six hundred forty-four million, four hundred fifty-three thousand, four hundred twenty-three".