144162391 has 2 divisors, whose sum is σ = 144162392. Its totient is φ = 144162390.

The previous prime is 144162383. The next prime is 144162427. The reversal of 144162391 is 193261441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144162391 - 2³ = 144162383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144162341) 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, 72081195 + 72081196.

It is an arithmetic number, because the mean of its divisors is an integer number (72081196).

Almost surely, 2^144162391 is an apocalyptic number.

144162391 is a deficient number, since it is larger than the sum of its proper divisors (1).

144162391 is an equidigital number, since it uses as much as digits as its factorization.

144162391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 144162391 is about 12006.7643851289. The cubic root of 144162391 is about 524.3452348309.

It can be divided in two parts, 14416 and 2391, that added together give a 5-th power (16807 = 7⁵).

The spelling of 144162391 in words is "one hundred forty-four million, one hundred sixty-two thousand, three hundred ninety-one".