144471637 has 2 divisors, whose sum is σ = 144471638. Its totient is φ = 144471636.

The previous prime is 144471617. The next prime is 144471667. The reversal of 144471637 is 736174441.

It is a happy number.

144471637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114725521 + 29746116 = 10711^2 + 5454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144471637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144471596 and 144471605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144471617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72235818 + 72235819.

It is an arithmetic number, because the mean of its divisors is an integer number (72235819).

Almost surely, 2^144471637 is an apocalyptic number.

It is an amenable number.

144471637 is a deficient number, since it is larger than the sum of its proper divisors (1).

144471637 is an equidigital number, since it uses as much as digits as its factorization.

144471637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 144471637 is about 12019.6354770018. The cubic root of 144471637 is about 524.7198953284.

The spelling of 144471637 in words is "one hundred forty-four million, four hundred seventy-one thousand, six hundred thirty-seven".