144220191 has 16 divisors (see below), whose sum is σ = 197904000. Its totient is φ = 93352608.

The previous prime is 144220171. The next prime is 144220199. The reversal of 144220191 is 191022441.

It is not a de Polignac number, because 144220191 - 2¹⁰ = 144219167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67660 + ... + 69758.

It is an arithmetic number, because the mean of its divisors is an integer number (12369000).

Almost surely, 2^144220191 is an apocalyptic number.

144220191 is a deficient number, since it is larger than the sum of its proper divisors (53683809).

144220191 is a wasteful number, since it uses less digits than its factorization.

144220191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 144220191 is about 12009.1711204396. The cubic root of 144220191 is about 524.4153018917.

The spelling of 144220191 in words is "one hundred forty-four million, two hundred twenty thousand, one hundred ninety-one".