144989395169 has 2 divisors, whose sum is σ = 144989395170. Its totient is φ = 144989395168.

The previous prime is 144989395093. The next prime is 144989395217. The reversal of 144989395169 is 961593989441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77863321600 + 67126073569 = 279040^2 + 259087^2 .

It is a cyclic number.

It is not a de Polignac number, because 144989395169 - 2³² = 140694427873 is a prime.

It is a super-2 number, since 2×144989395169² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144989395099 and 144989395108.

It is not a weakly prime, because it can be changed into another prime (144989395769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72494697584 + 72494697585.

It is an arithmetic number, because the mean of its divisors is an integer number (72494697585).

Almost surely, 2^144989395169 is an apocalyptic number.

It is an amenable number.

144989395169 is a deficient number, since it is larger than the sum of its proper divisors (1).

144989395169 is an equidigital number, since it uses as much as digits as its factorization.

144989395169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75582720, while the sum is 68.

The spelling of 144989395169 in words is "one hundred forty-four billion, nine hundred eighty-nine million, three hundred ninety-five thousand, one hundred sixty-nine".