144137509 has 16 divisors (see below), whose sum is σ = 157199616. Its totient is φ = 131622400.

The previous prime is 144137501. The next prime is 144137519. The reversal of 144137509 is 905731441.

144137509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 144137509 - 2³ = 144137501 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 (144137501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157764 + ... + 158674.

It is an arithmetic number, because the mean of its divisors is an integer number (9824976).

Almost surely, 2^144137509 is an apocalyptic number.

It is an amenable number.

144137509 is a deficient number, since it is larger than the sum of its proper divisors (13062107).

144137509 is a wasteful number, since it uses less digits than its factorization.

144137509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 144137509 is about 12005.7281745007. The cubic root of 144137509 is about 524.3150662857.

The spelling of 144137509 in words is "one hundred forty-four million, one hundred thirty-seven thousand, five hundred nine".