1143144165 has 32 divisors (see below), whose sum is σ = 1876492800. Its totient is φ = 593902080.

The previous prime is 1143144131. The next prime is 1143144169. The reversal of 1143144165 is 5614413411.

1143144165 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1143144165 - 2⁹ = 1143143653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143144169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 638091 + ... + 639879.

It is an arithmetic number, because the mean of its divisors is an integer number (58640400).

Almost surely, 2^1143144165 is an apocalyptic number.

1143144165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143144165 is a deficient number, since it is larger than the sum of its proper divisors (733348635).

1143144165 is a wasteful number, since it uses less digits than its factorization.

1143144165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877.

The product of its digits is 5760, while the sum is 30.

The square root of 1143144165 is about 33810.4150373816. The cubic root of 1143144165 is about 1045.6034349705.

Adding to 1143144165 its reverse (5614413411), we get a palindrome (6757557576).

The spelling of 1143144165 in words is "one billion, one hundred forty-three million, one hundred forty-four thousand, one hundred sixty-five".