1144004013 has 16 divisors (see below), whose sum is σ = 1698499840. Its totient is φ = 761013792.

The previous prime is 1144004009. The next prime is 1144004021. The reversal of 1144004013 is 3104004411.

It is not a de Polignac number, because 1144004013 - 2² = 1144004009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144004033) 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 in 15 ways as a sum of consecutive naturals, for example, 33256 + ... + 58257.

It is an arithmetic number, because the mean of its divisors is an integer number (106156240).

Almost surely, 2^1144004013 is an apocalyptic number.

It is an amenable number.

1144004013 is a deficient number, since it is larger than the sum of its proper divisors (554495827).

1144004013 is an equidigital number, since it uses as much as digits as its factorization.

1144004013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91985 (or 91979 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1144004013 is about 33823.1283739396. The cubic root of 1144004013 is about 1045.8655292674.

Adding to 1144004013 its reverse (3104004411), we get a palindrome (4248008424).

The spelling of 1144004013 in words is "one billion, one hundred forty-four million, four thousand, thirteen".