18068258 has 16 divisors (see below), whose sum is σ = 29276856. Its totient is φ = 8313600.

The previous prime is 18068251. The next prime is 18068279. The reversal of 18068258 is 85286081.

It can be written as a sum of positive squares in 4 ways, for example, as 16752649 + 1315609 = 4093^2 + 1147^2 .

It is not an unprimeable number, because it can be changed into a prime (18068251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9560 + ... + 11292.

Almost surely, 2^18068258 is an apocalyptic number.

18068258 is a deficient number, since it is larger than the sum of its proper divisors (11208598).

18068258 is a wasteful number, since it uses less digits than its factorization.

18068258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 18068258 is about 4250.6773577866. The cubic root of 18068258 is about 262.4049929802.

The spelling of 18068258 in words is "eighteen million, sixty-eight thousand, two hundred fifty-eight".