1244345005 has 8 divisors (see below), whose sum is σ = 1581050232. Its totient is φ = 936918528.

The previous prime is 1244344999. The next prime is 1244345033. The reversal of 1244345005 is 5005434421.

It can be written as a sum of positive squares in 4 ways, for example, as 365459689 + 878885316 = 19117^2 + 29646^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244345005 - 2⁵ = 1244344973 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 7 ways as a sum of consecutive naturals, for example, 7319592 + ... + 7319761.

It is an arithmetic number, because the mean of its divisors is an integer number (197631279).

Almost surely, 2^1244345005 is an apocalyptic number.

It is an amenable number.

1244345005 is a deficient number, since it is larger than the sum of its proper divisors (336705227).

1244345005 is a wasteful number, since it uses less digits than its factorization.

1244345005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14639375.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1244345005 is about 35275.2746977256. The cubic root of 1244345005 is about 1075.5904468637.

Adding to 1244345005 its reverse (5005434421), we get a palindrome (6249779426).

The spelling of 1244345005 in words is "one billion, two hundred forty-four million, three hundred forty-five thousand, five".