1244130013 has 16 divisors (see below), whose sum is σ = 1505088000. Its totient is φ = 1004607792.

The previous prime is 1244129993. The next prime is 1244130067. The reversal of 1244130013 is 3100314421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244130013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244131013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2323 + ... + 49936.

It is an arithmetic number, because the mean of its divisors is an integer number (94068000).

Almost surely, 2^1244130013 is an apocalyptic number.

It is an amenable number.

1244130013 is a deficient number, since it is larger than the sum of its proper divisors (260957987).

1244130013 is a wasteful number, since it uses less digits than its factorization.

1244130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52464.

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

The square root of 1244130013 is about 35272.2272191593. The cubic root of 1244130013 is about 1075.5284981652.

Adding to 1244130013 its reverse (3100314421), we get a palindrome (4344444434).

The spelling of 1244130013 in words is "one billion, two hundred forty-four million, one hundred thirty thousand, thirteen".