2644242005 has 4 divisors (see below), whose sum is σ = 3173090412. Its totient is φ = 2115393600.

The previous prime is 2644241993. The next prime is 2644242017. The reversal of 2644242005 is 5002424462.

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

It is an interprime number because it is at equal distance from previous prime (2644241993) and next prime (2644242017).

It can be written as a sum of positive squares in 2 ways, for example, as 424607236 + 2219634769 = 20606^2 + 47113^2 .

It is not a de Polignac number, because 2644242005 - 2¹⁰ = 2644240981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264424196 + ... + 264424205.

It is an arithmetic number, because the mean of its divisors is an integer number (793272603).

Almost surely, 2^2644242005 is an apocalyptic number.

It is an amenable number.

2644242005 is a deficient number, since it is larger than the sum of its proper divisors (528848407).

2644242005 is an equidigital number, since it uses as much as digits as its factorization.

2644242005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528848406.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 2644242005 is about 51422.1937007748. The cubic root of 2644242005 is about 1382.8245036561.

Adding to 2644242005 its reverse (5002424462), we get a palindrome (7646666467).

The spelling of 2644242005 in words is "two billion, six hundred forty-four million, two hundred forty-two thousand, five".