1719044449049 has 2 divisors, whose sum is σ = 1719044449050. Its totient is φ = 1719044449048.

The previous prime is 1719044449009. The next prime is 1719044449061. The reversal of 1719044449049 is 9409444409171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1717515091600 + 1529357449 = 1310540^2 + 39107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1719044449049 is a prime.

It is a super-2 number, since 2×1719044449049² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1719044448985 and 1719044449003.

It is not a weakly prime, because it can be changed into another prime (1719044449009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 859522224524 + 859522224525.

It is an arithmetic number, because the mean of its divisors is an integer number (859522224525).

Almost surely, 2^{1719044449049} is an apocalyptic number.

It is an amenable number.

1719044449049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1719044449049 is an equidigital number, since it uses as much as digits as its factorization.

1719044449049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 1719044449049 in words is "one trillion, seven hundred nineteen billion, forty-four million, four hundred forty-nine thousand, forty-nine".