18680334 has 8 divisors (see below), whose sum is σ = 37360680. Its totient is φ = 6226776.

The previous prime is 18680323. The next prime is 18680351. The reversal of 18680334 is 43308681.

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

18680334 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18680295 and 18680304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556689 + ... + 1556700.

It is an arithmetic number, because the mean of its divisors is an integer number (4670085).

Almost surely, 2^18680334 is an apocalyptic number.

18680334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18680334 is a wasteful number, since it uses less digits than its factorization.

18680334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113394.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 18680334 is about 4322.0751960141. The cubic root of 18680334 is about 265.3352065192.

The spelling of 18680334 in words is "eighteen million, six hundred eighty thousand, three hundred thirty-four".