1968450138719 has 2 divisors, whose sum is σ = 1968450138720. Its totient is φ = 1968450138718.

The previous prime is 1968450138709. The next prime is 1968450138749. The reversal of 1968450138719 is 9178310548691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1968450138719 - 2⁸ = 1968450138463 is a prime.

It is a super-2 number, since 2×1968450138719² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1968450138709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984225069359 + 984225069360.

It is an arithmetic number, because the mean of its divisors is an integer number (984225069360).

Almost surely, 2^{1968450138719} is an apocalyptic number.

1968450138719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968450138719 is an equidigital number, since it uses as much as digits as its factorization.

1968450138719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 1968450138719 in words is "one trillion, nine hundred sixty-eight billion, four hundred fifty million, one hundred thirty-eight thousand, seven hundred nineteen".