144835189 has 4 divisors (see below), whose sum is σ = 153354924. Its totient is φ = 136315456.

The previous prime is 144835183. The next prime is 144835213. The reversal of 144835189 is 981538441.

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 130644900 + 14190289 = 11430^2 + 3767^2 .

It is a cyclic number.

It is not a de Polignac number, because 144835189 - 2³ = 144835181 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 (144835181) 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, 4259842 + ... + 4259875.

It is an arithmetic number, because the mean of its divisors is an integer number (38338731).

Almost surely, 2^144835189 is an apocalyptic number.

It is an amenable number.

144835189 is a deficient number, since it is larger than the sum of its proper divisors (8519735).

144835189 is an equidigital number, since it uses as much as digits as its factorization.

144835189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519734.

The product of its digits is 138240, while the sum is 43.

The square root of 144835189 is about 12034.7492287958. The cubic root of 144835189 is about 525.1596660246.

The spelling of 144835189 in words is "one hundred forty-four million, eight hundred thirty-five thousand, one hundred eighty-nine".