144061809 has 16 divisors (see below), whose sum is σ = 195683904. Its totient is φ = 94248000.

The previous prime is 144061789. The next prime is 144061817. The reversal of 144061809 is 908160441.

It is not a de Polignac number, because 144061809 - 2¹⁹ = 143537521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144061809.

It is not an unprimeable number, because it can be changed into a prime (144061829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127722 + ... + 128844.

It is an arithmetic number, because the mean of its divisors is an integer number (12230244).

Almost surely, 2^144061809 is an apocalyptic number.

It is an amenable number.

144061809 is a deficient number, since it is larger than the sum of its proper divisors (51622095).

144061809 is a wasteful number, since it uses less digits than its factorization.

144061809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 144061809 is about 12002.5750987028. The cubic root of 144061809 is about 524.2232613576.

The spelling of 144061809 in words is "one hundred forty-four million, sixty-one thousand, eight hundred nine".