1143111444 has 48 divisors (see below), whose sum is σ = 2763573120. Its totient is φ = 367319680.

The previous prime is 1143111439. The next prime is 1143111457. The reversal of 1143111444 is 4441113411.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 256354 + ... + 260774.

It is an arithmetic number, because the mean of its divisors is an integer number (57574440).

Almost surely, 2^1143111444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143111444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381786560).

1143111444 is an abundant number, since it is smaller than the sum of its proper divisors (1620461676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143111444 is a wasteful number, since it uses less digits than its factorization.

1143111444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200 (or 5198 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 1143111444 is about 33809.9311445617. The cubic root of 1143111444 is about 1045.5934585337.

Adding to 1143111444 its reverse (4441113411), we get a palindrome (5584224855).

The spelling of 1143111444 in words is "one billion, one hundred forty-three million, one hundred eleven thousand, four hundred forty-four".