144643189 has 2 divisors, whose sum is σ = 144643190. Its totient is φ = 144643188.

The previous prime is 144643171. The next prime is 144643223. The reversal of 144643189 is 981346441.

144643189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112720689 + 31922500 = 10617^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 144643189 - 2⁷ = 144643061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144643129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72321594 + 72321595.

It is an arithmetic number, because the mean of its divisors is an integer number (72321595).

Almost surely, 2^144643189 is an apocalyptic number.

It is an amenable number.

144643189 is a deficient number, since it is larger than the sum of its proper divisors (1).

144643189 is an equidigital number, since it uses as much as digits as its factorization.

144643189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 144643189 is about 12026.7696826704. The cubic root of 144643189 is about 524.9275050315.

The spelling of 144643189 in words is "one hundred forty-four million, six hundred forty-three thousand, one hundred eighty-nine".