144813789 has 12 divisors (see below), whose sum is σ = 212721600. Its totient is φ = 94905864.

The previous prime is 144813787. The next prime is 144813797. The reversal of 144813789 is 987318441.

It is a happy number.

It is not a de Polignac number, because 144813789 - 2¹ = 144813787 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144813787) 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, 135829 + ... + 136890.

It is an arithmetic number, because the mean of its divisors is an integer number (17726800).

Almost surely, 2^144813789 is an apocalyptic number.

It is an amenable number.

144813789 is a deficient number, since it is larger than the sum of its proper divisors (67907811).

144813789 is a wasteful number, since it uses less digits than its factorization.

144813789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272784 (or 272781 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 144813789 is about 12033.8601038902. The cubic root of 144813789 is about 525.1337999109.

The spelling of 144813789 in words is "one hundred forty-four million, eight hundred thirteen thousand, seven hundred eighty-nine".