1144144544 has 24 divisors (see below), whose sum is σ = 2253394080. Its totient is φ = 571854016.

The previous prime is 1144144541. The next prime is 1144144553. The reversal of 1144144544 is 4454414411.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1144144544.

It is not an unprimeable number, because it can be changed into a prime (1144144541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108197 + ... + 118299.

It is an arithmetic number, because the mean of its divisors is an integer number (93891420).

Almost surely, 2^1144144544 is an apocalyptic number.

It is an amenable number.

1144144544 is a deficient number, since it is larger than the sum of its proper divisors (1109249536).

1144144544 is a wasteful number, since it uses less digits than its factorization.

1144144544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13652 (or 13644 counting only the distinct ones).

The product of its digits is 20480, while the sum is 32.

The square root of 1144144544 is about 33825.2057495590. The cubic root of 1144144544 is about 1045.9083526926.

Adding to 1144144544 its reverse (4454414411), we get a palindrome (5598558955).

The spelling of 1144144544 in words is "one billion, one hundred forty-four million, one hundred forty-four thousand, five hundred forty-four".