144805109 has 2 divisors, whose sum is σ = 144805110. Its totient is φ = 144805108.

The previous prime is 144805103. The next prime is 144805187. The reversal of 144805109 is 901508441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90193009 + 54612100 = 9497^2 + 7390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144805109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144805103) 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 as a sum of consecutive naturals, namely, 72402554 + 72402555.

It is an arithmetic number, because the mean of its divisors is an integer number (72402555).

Almost surely, 2^144805109 is an apocalyptic number.

It is an amenable number.

144805109 is a deficient number, since it is larger than the sum of its proper divisors (1).

144805109 is an equidigital number, since it uses as much as digits as its factorization.

144805109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 144805109 is about 12033.4994494536. The cubic root of 144805109 is about 525.1233076953.

The spelling of 144805109 in words is "one hundred forty-four million, eight hundred five thousand, one hundred nine".