1144185113 has 4 divisors (see below), whose sum is σ = 1162942308. Its totient is φ = 1125427920.

The previous prime is 1144185083. The next prime is 1144185139. The reversal of 1144185113 is 3115814411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 459159184 + 685025929 = 21428^2 + 26173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144185113 - 2¹⁶ = 1144119577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144185143) 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, 9378506 + ... + 9378627.

It is an arithmetic number, because the mean of its divisors is an integer number (290735577).

Almost surely, 2^1144185113 is an apocalyptic number.

It is an amenable number.

1144185113 is a deficient number, since it is larger than the sum of its proper divisors (18757195).

1144185113 is an equidigital number, since it uses as much as digits as its factorization.

1144185113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18757194.

The product of its digits is 1920, while the sum is 29.

The square root of 1144185113 is about 33825.8054301742. The cubic root of 1144185113 is about 1045.9207144625.

Adding to 1144185113 its reverse (3115814411), we get a palindrome (4259999524).

The spelling of 1144185113 in words is "one billion, one hundred forty-four million, one hundred eighty-five thousand, one hundred thirteen".