18068279 has 2 divisors, whose sum is σ = 18068280. Its totient is φ = 18068278.

The previous prime is 18068251. The next prime is 18068333. The reversal of 18068279 is 97286081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18068279 - 2⁸ = 18068023 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18068579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034139 + 9034140.

It is an arithmetic number, because the mean of its divisors is an integer number (9034140).

Almost surely, 2^18068279 is an apocalyptic number.

18068279 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068279 is an equidigital number, since it uses as much as digits as its factorization.

18068279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 18068279 is about 4250.6798279805. The cubic root of 18068279 is about 262.4050946410.

The spelling of 18068279 in words is "eighteen million, sixty-eight thousand, two hundred seventy-nine".