18668353 has 8 divisors (see below), whose sum is σ = 20799360. Its totient is φ = 16609680.

The previous prime is 18668339. The next prime is 18668357. The reversal of 18668353 is 35386681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18668353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18668357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17538 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (2599920).

Almost surely, 2^18668353 is an apocalyptic number.

It is an amenable number.

18668353 is a deficient number, since it is larger than the sum of its proper divisors (2131007).

18668353 is a wasteful number, since it uses less digits than its factorization.

18668353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36167.

The product of its digits is 103680, while the sum is 40.

The square root of 18668353 is about 4320.6889496931. The cubic root of 18668353 is about 265.2784684011.

The spelling of 18668353 in words is "eighteen million, six hundred sixty-eight thousand, three hundred fifty-three".