68319019 has 2 divisors, whose sum is σ = 68319020. Its totient is φ = 68319018.

The previous prime is 68319011. The next prime is 68319049. The reversal of 68319019 is 91091386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68319019 - 2³ = 68319011 is a prime.

It is a super-2 number, since 2×68319019² = 9334976714244722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68319011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34159509 + 34159510.

It is an arithmetic number, because the mean of its divisors is an integer number (34159510).

Almost surely, 2^68319019 is an apocalyptic number.

68319019 is a deficient number, since it is larger than the sum of its proper divisors (1).

68319019 is an equidigital number, since it uses as much as digits as its factorization.

68319019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 68319019 is about 8265.5319852989. The cubic root of 68319019 is about 408.8028114327.

The spelling of 68319019 in words is "sixty-eight million, three hundred nineteen thousand, nineteen".