1608449685679 has 2 divisors, whose sum is σ = 1608449685680. Its totient is φ = 1608449685678.

The previous prime is 1608449685677. The next prime is 1608449685707. The reversal of 1608449685679 is 9765869448061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1608449685679 - 2¹ = 1608449685677 is a prime.

It is a super-2 number, since 2×1608449685679² (a number of 25 digits) contains 22 as substring.

Together with 1608449685677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1608449685677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804224842839 + 804224842840.

It is an arithmetic number, because the mean of its divisors is an integer number (804224842840).

Almost surely, 2^{1608449685679} is an apocalyptic number.

1608449685679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608449685679 is an equidigital number, since it uses as much as digits as its factorization.

1608449685679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627056640, while the sum is 73.

The spelling of 1608449685679 in words is "one trillion, six hundred eight billion, four hundred forty-nine million, six hundred eighty-five thousand, six hundred seventy-nine".