4444309489181 has 2 divisors, whose sum is σ = 4444309489182. Its totient is φ = 4444309489180.

The previous prime is 4444309489177. The next prime is 4444309489187. The reversal of 4444309489181 is 1819849034444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3202789853956 + 1241519635225 = 1789634^2 + 1114235^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444309489181 - 2² = 4444309489177 is a prime.

It is a super-2 number, since 2×4444309489181² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4444309489181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444309489187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222154744590 + 2222154744591.

It is an arithmetic number, because the mean of its divisors is an integer number (2222154744591).

Almost surely, 2^{4444309489181} is an apocalyptic number.

It is an amenable number.

4444309489181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444309489181 is an equidigital number, since it uses as much as digits as its factorization.

4444309489181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 4444309489181 in words is "four trillion, four hundred forty-four billion, three hundred nine million, four hundred eighty-nine thousand, one hundred eighty-one".