18068251 has 2 divisors, whose sum is σ = 18068252. Its totient is φ = 18068250.

The previous prime is 18068233. The next prime is 18068279. The reversal of 18068251 is 15286081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18068251 - 2⁹ = 18067739 is a prime.

It is not a weakly prime, because it can be changed into another prime (18068201) 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, 9034125 + 9034126.

It is an arithmetic number, because the mean of its divisors is an integer number (9034126).

Almost surely, 2^18068251 is an apocalyptic number.

18068251 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068251 is an equidigital number, since it uses as much as digits as its factorization.

18068251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 18068251 is about 4250.6765343884. The cubic root of 18068251 is about 262.4049590932.

The spelling of 18068251 in words is "eighteen million, sixty-eight thousand, two hundred fifty-one".