18116893 has 8 divisors (see below), whose sum is σ = 18959616. Its totient is φ = 17278800.

The previous prime is 18116873. The next prime is 18116911. The reversal of 18116893 is 39861181.

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-18116893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18116863) 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, 8748 + ... + 10618.

It is an arithmetic number, because the mean of its divisors is an integer number (2369952).

Almost surely, 2^18116893 is an apocalyptic number.

It is an amenable number.

18116893 is a deficient number, since it is larger than the sum of its proper divisors (842723).

18116893 is a wasteful number, since it uses less digits than its factorization.

18116893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315.

The product of its digits is 10368, while the sum is 37.

The square root of 18116893 is about 4256.3943661273. The cubic root of 18116893 is about 262.6402237961.

The spelling of 18116893 in words is "eighteen million, one hundred sixteen thousand, eight hundred ninety-three".