18679117 has 8 divisors (see below), whose sum is σ = 19305216. Its totient is φ = 18059472.

The previous prime is 18679099. The next prime is 18679121. The reversal of 18679117 is 71197681.

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

It is a cyclic number.

It is not a de Polignac number, because 18679117 - 2¹¹ = 18677069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18679117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18679417) 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, 4668 + ... + 7690.

It is an arithmetic number, because the mean of its divisors is an integer number (2413152).

Almost surely, 2^18679117 is an apocalyptic number.

It is an amenable number.

18679117 is a deficient number, since it is larger than the sum of its proper divisors (626099).

18679117 is a wasteful number, since it uses less digits than its factorization.

18679117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227.

The product of its digits is 21168, while the sum is 40.

The square root of 18679117 is about 4321.9344048701. The cubic root of 18679117 is about 265.3294443103.

The spelling of 18679117 in words is "eighteen million, six hundred seventy-nine thousand, one hundred seventeen".