1244013013 has 2 divisors, whose sum is σ = 1244013014. Its totient is φ = 1244013012.

The previous prime is 1244012999. The next prime is 1244013031. The reversal of 1244013013 is 3103104421.

Together with next prime (1244013031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044129969 + 199883044 = 32313^2 + 14138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244013013 - 2²⁹ = 707142101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244013413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622006506 + 622006507.

It is an arithmetic number, because the mean of its divisors is an integer number (622006507).

Almost surely, 2^1244013013 is an apocalyptic number.

It is an amenable number.

1244013013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244013013 is an equidigital number, since it uses as much as digits as its factorization.

1244013013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1244013013 is about 35270.5686514975. The cubic root of 1244013013 is about 1075.4947822948.

Adding to 1244013013 its reverse (3103104421), we get a palindrome (4347117434).

The spelling of 1244013013 in words is "one billion, two hundred forty-four million, thirteen thousand, thirteen".