1739449884649 has 2 divisors, whose sum is σ = 1739449884650. Its totient is φ = 1739449884648.

The previous prime is 1739449884607. The next prime is 1739449884839. The reversal of 1739449884649 is 9464889449371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1272311809024 + 467138075625 = 1127968^2 + 683475^2 .

It is an emirp because it is prime and its reverse (9464889449371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1739449884649 - 2⁷ = 1739449884521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1739449884449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 869724942324 + 869724942325.

It is an arithmetic number, because the mean of its divisors is an integer number (869724942325).

Almost surely, 2^{1739449884649} is an apocalyptic number.

It is an amenable number.

1739449884649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1739449884649 is an equidigital number, since it uses as much as digits as its factorization.

1739449884649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1504935936, while the sum is 76.

The spelling of 1739449884649 in words is "one trillion, seven hundred thirty-nine billion, four hundred forty-nine million, eight hundred eighty-four thousand, six hundred forty-nine".