18068642 has 8 divisors (see below), whose sum is σ = 27209196. Its totient is φ = 8998912.

The previous prime is 18068621. The next prime is 18068647. The reversal of 18068642 is 24686081.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 14641 = 4249^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18068647) 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 3 ways as a sum of consecutive naturals, for example, 17063 + ... + 18090.

Almost surely, 2^18068642 is an apocalyptic number.

18068642 is a deficient number, since it is larger than the sum of its proper divisors (9140554).

18068642 is a wasteful number, since it uses less digits than its factorization.

18068642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35412.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 18068642 is about 4250.7225268182. The cubic root of 18068642 is about 262.4068519087.

The spelling of 18068642 in words is "eighteen million, sixty-eight thousand, six hundred forty-two".