16189868 has 12 divisors (see below), whose sum is σ = 29098272. Its totient is φ = 7876080.

The previous prime is 16189841. The next prime is 16189871. The reversal of 16189868 is 86898161.

It is a super-2 number, since 2×16189868² = 524223651714848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54548 + ... + 54843.

It is an arithmetic number, because the mean of its divisors is an integer number (2424856).

Almost surely, 2^16189868 is an apocalyptic number.

It is an amenable number.

16189868 is a deficient number, since it is larger than the sum of its proper divisors (12908404).

16189868 is a wasteful number, since it uses less digits than its factorization.

16189868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109432 (or 109430 counting only the distinct ones).

The product of its digits is 165888, while the sum is 47.

The square root of 16189868 is about 4023.6635048175. The cubic root of 16189868 is about 252.9770376031.

The spelling of 16189868 in words is "sixteen million, one hundred eighty-nine thousand, eight hundred sixty-eight".