144538091 has 2 divisors, whose sum is σ = 144538092. Its totient is φ = 144538090.

The previous prime is 144538087. The next prime is 144538123. The reversal of 144538091 is 190835441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144538091 - 2² = 144538087 is a prime.

It is not a weakly prime, because it can be changed into another prime (144538591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72269045 + 72269046.

It is an arithmetic number, because the mean of its divisors is an integer number (72269046).

Almost surely, 2^144538091 is an apocalyptic number.

144538091 is a deficient number, since it is larger than the sum of its proper divisors (1).

144538091 is an equidigital number, since it uses as much as digits as its factorization.

144538091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 144538091 is about 12022.3995525020. The cubic root of 144538091 is about 524.8003364714.

The spelling of 144538091 in words is "one hundred forty-four million, five hundred thirty-eight thousand, ninety-one".