1244011013 has 16 divisors (see below), whose sum is σ = 1432035840. Its totient is φ = 1058593536.

The previous prime is 1244011007. The next prime is 1244011033. The reversal of 1244011013 is 3101104421.

It is a happy number.

It is not a de Polignac number, because 1244011013 - 2¹⁰ = 1244009989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244010982 and 1244011000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244011033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663245 + ... + 665117.

It is an arithmetic number, because the mean of its divisors is an integer number (89502240).

Almost surely, 2^1244011013 is an apocalyptic number.

It is an amenable number.

1244011013 is a deficient number, since it is larger than the sum of its proper divisors (188024827).

1244011013 is a wasteful number, since it uses less digits than its factorization.

1244011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1244011013 is about 35270.5402992356. The cubic root of 1244011013 is about 1075.4942059367.

Adding to 1244011013 its reverse (3101104421), we get a palindrome (4345115434).

The spelling of 1244011013 in words is "one billion, two hundred forty-four million, eleven thousand, thirteen".