1244300013 has 48 divisors (see below), whose sum is σ = 2035800000. Its totient is φ = 725437440.

The previous prime is 1244300009. The next prime is 1244300039. The reversal of 1244300013 is 3100034421.

It is not a de Polignac number, because 1244300013 - 2² = 1244300009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244300003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 995613 + ... + 996861.

It is an arithmetic number, because the mean of its divisors is an integer number (42412500).

Almost surely, 2^1244300013 is an apocalyptic number.

It is an amenable number.

1244300013 is a deficient number, since it is larger than the sum of its proper divisors (791499987).

1244300013 is a wasteful number, since it uses less digits than its factorization.

1244300013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1244300013 is about 35274.6369648222. The cubic root of 1244300013 is about 1075.5774832701.

Adding to 1244300013 its reverse (3100034421), we get a palindrome (4344334434).

The spelling of 1244300013 in words is "one billion, two hundred forty-four million, three hundred thousand, thirteen".