1144438189 has 4 divisors (see below), whose sum is σ = 1161519424. Its totient is φ = 1127356956.

The previous prime is 1144438187. The next prime is 1144438201. The reversal of 1144438189 is 9818344411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1144438189 - 2¹ = 1144438187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144438187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8540517 + ... + 8540650.

It is an arithmetic number, because the mean of its divisors is an integer number (290379856).

Almost surely, 2^1144438189 is an apocalyptic number.

It is an amenable number.

1144438189 is a deficient number, since it is larger than the sum of its proper divisors (17081235).

1144438189 is an equidigital number, since it uses as much as digits as its factorization.

1144438189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17081234.

The product of its digits is 110592, while the sum is 43.

The square root of 1144438189 is about 33829.5460950927. The cubic root of 1144438189 is about 1045.9978225908.

The spelling of 1144438189 in words is "one billion, one hundred forty-four million, four hundred thirty-eight thousand, one hundred eighty-nine".