144357491 has 2 divisors, whose sum is σ = 144357492. Its totient is φ = 144357490.

The previous prime is 144357469. The next prime is 144357509. The reversal of 144357491 is 194753441.

144357491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144357491 is a prime.

It is not a weakly prime, because it can be changed into another prime (144357431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72178745 + 72178746.

It is an arithmetic number, because the mean of its divisors is an integer number (72178746).

Almost surely, 2^144357491 is an apocalyptic number.

144357491 is a deficient number, since it is larger than the sum of its proper divisors (1).

144357491 is an equidigital number, since it uses as much as digits as its factorization.

144357491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 144357491 is about 12014.8862250127. The cubic root of 144357491 is about 524.5816664472.

The spelling of 144357491 in words is "one hundred forty-four million, three hundred fifty-seven thousand, four hundred ninety-one".