144509189 has 4 divisors (see below), whose sum is σ = 157646400. Its totient is φ = 131371980.

The previous prime is 144509179. The next prime is 144509213. The reversal of 144509189 is 981905441.

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 144509189 - 2⁴ = 144509173 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 (144509119) 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, 6568589 + ... + 6568610.

It is an arithmetic number, because the mean of its divisors is an integer number (39411600).

Almost surely, 2^144509189 is an apocalyptic number.

It is an amenable number.

144509189 is a deficient number, since it is larger than the sum of its proper divisors (13137211).

144509189 is a wasteful number, since it uses less digits than its factorization.

144509189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13137210.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 144509189 is about 12021.1974861076. The cubic root of 144509189 is about 524.7653542501.

The spelling of 144509189 in words is "one hundred forty-four million, five hundred nine thousand, one hundred eighty-nine".