1144130561 has 16 divisors (see below), whose sum is σ = 1365639168. Its totient is φ = 937213200.

The previous prime is 1144130531. The next prime is 1144130569. The reversal of 1144130561 is 1650314411.

It is not a de Polignac number, because 1144130561 - 2³⁰ = 70388737 is a prime.

It is a super-2 number, since 2×1144130561² = 2618069481228349442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1144130561.

It is not an unprimeable number, because it can be changed into a prime (1144130569) 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, 234416 + ... + 239246.

It is an arithmetic number, because the mean of its divisors is an integer number (85352448).

Almost surely, 2^1144130561 is an apocalyptic number.

It is an amenable number.

1144130561 is a deficient number, since it is larger than the sum of its proper divisors (221508607).

1144130561 is a wasteful number, since it uses less digits than its factorization.

1144130561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1144130561 is about 33824.9990539542. Note that the first 3 decimals coincide. The cubic root of 1144130561 is about 1045.9040918685.

Adding to 1144130561 its reverse (1650314411), we get a palindrome (2794444972).

The spelling of 1144130561 in words is "one billion, one hundred forty-four million, one hundred thirty thousand, five hundred sixty-one".