1144322013 has 16 divisors (see below), whose sum is σ = 1630935936. Its totient is φ = 711912960.

The previous prime is 1144321999. The next prime is 1144322017. The reversal of 1144322013 is 3102234411.

It is not a de Polignac number, because 1144322013 - 2¹⁴ = 1144305629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144322017) 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, 199420 + ... + 205077.

It is an arithmetic number, because the mean of its divisors is an integer number (101933496).

Almost surely, 2^1144322013 is an apocalyptic number.

It is an amenable number.

1144322013 is a deficient number, since it is larger than the sum of its proper divisors (486613923).

1144322013 is a wasteful number, since it uses less digits than its factorization.

1144322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404564.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1144322013 is about 33827.8289726077. The cubic root of 1144322013 is about 1045.9624270705.

Adding to 1144322013 its reverse (3102234411), we get a palindrome (4246556424).

The spelling of 1144322013 in words is "one billion, one hundred forty-four million, three hundred twenty-two thousand, thirteen".