1244403004181 has 2 divisors, whose sum is σ = 1244403004182. Its totient is φ = 1244403004180.

The previous prime is 1244403004129. The next prime is 1244403004193. The reversal of 1244403004181 is 1814003044421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1101544707025 + 142858297156 = 1049545^2 + 377966^2 .

It is an emirp because it is prime and its reverse (1814003044421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244403004181 - 2¹⁴ = 1244402987797 is a prime.

It is a super-2 number, since 2×1244403004181² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244403004081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622201502090 + 622201502091.

It is an arithmetic number, because the mean of its divisors is an integer number (622201502091).

Almost surely, 2^{1244403004181} is an apocalyptic number.

It is an amenable number.

1244403004181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244403004181 is an equidigital number, since it uses as much as digits as its factorization.

1244403004181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 1244403004181 in words is "one trillion, two hundred forty-four billion, four hundred three million, four thousand, one hundred eighty-one".