144165789 has 12 divisors (see below), whose sum is σ = 209320956. Its totient is φ = 95611392.

The previous prime is 144165781. The next prime is 144165809. The reversal of 144165789 is 987561441.

It can be written as a sum of positive squares in 2 ways, for example, as 63920025 + 80245764 = 7995^2 + 8958^2 .

It is not a de Polignac number, because 144165789 - 2³ = 144165781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144165781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39762 + ... + 43235.

It is an arithmetic number, because the mean of its divisors is an integer number (17443413).

Almost surely, 2^144165789 is an apocalyptic number.

It is an amenable number.

144165789 is a deficient number, since it is larger than the sum of its proper divisors (65155167).

144165789 is a wasteful number, since it uses less digits than its factorization.

144165789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83196 (or 83193 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 144165789 is about 12006.9058878630. The cubic root of 144165789 is about 524.3493545163.

The spelling of 144165789 in words is "one hundred forty-four million, one hundred sixty-five thousand, seven hundred eighty-nine".