2543438441 has 4 divisors (see below), whose sum is σ = 2543539584. Its totient is φ = 2543337300.

The previous prime is 2543438437. The next prime is 2543438453. The reversal of 2543438441 is 1448343452.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2543438441 - 2² = 2543438437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2543438395 and 2543438404.

It is not an unprimeable number, because it can be changed into a prime (2543438411) 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, 19676 + ... + 73986.

It is an arithmetic number, because the mean of its divisors is an integer number (635884896).

Almost surely, 2^2543438441 is an apocalyptic number.

It is an amenable number.

2543438441 is a deficient number, since it is larger than the sum of its proper divisors (101143).

2543438441 is an equidigital number, since it uses as much as digits as its factorization.

2543438441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101142.

The product of its digits is 184320, while the sum is 38.

The square root of 2543438441 is about 50432.5137287445. The cubic root of 2543438441 is about 1365.0243866709.

The spelling of 2543438441 in words is "two billion, five hundred forty-three million, four hundred thirty-eight thousand, four hundred forty-one".