68018519 has 2 divisors, whose sum is σ = 68018520. Its totient is φ = 68018518.

The previous prime is 68018501. The next prime is 68018539. The reversal of 68018519 is 91581086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68018519 - 2⁸ = 68018263 is a prime.

It is a super-2 number, since 2×68018519² = 9253037853906722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68018539) 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, 34009259 + 34009260.

It is an arithmetic number, because the mean of its divisors is an integer number (34009260).

Almost surely, 2^68018519 is an apocalyptic number.

68018519 is a deficient number, since it is larger than the sum of its proper divisors (1).

68018519 is an equidigital number, since it uses as much as digits as its factorization.

68018519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 68018519 is about 8247.3340541050. The cubic root of 68018519 is about 408.2025598535.

The spelling of 68018519 in words is "sixty-eight million, eighteen thousand, five hundred nineteen".