18889016 has 16 divisors (see below), whose sum is σ = 35998440. Its totient is φ = 9289440.

The previous prime is 18889009. The next prime is 18889019. The reversal of 18889016 is 61098881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18866 + ... + 19841.

Almost surely, 2^18889016 is an apocalyptic number.

It is an amenable number.

18889016 is a deficient number, since it is larger than the sum of its proper divisors (17109424).

18889016 is a wasteful number, since it uses less digits than its factorization.

18889016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38774 (or 38770 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 18889016 is about 4346.1495602430. The cubic root of 18889016 is about 266.3195887372.

The spelling of 18889016 in words is "eighteen million, eight hundred eighty-nine thousand, sixteen".