16381868 has 12 divisors (see below), whose sum is σ = 29657040. Its totient is φ = 7908432.

The previous prime is 16381853. The next prime is 16381877. The reversal of 16381868 is 86818361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70496 + ... + 70727.

It is an arithmetic number, because the mean of its divisors is an integer number (2471420).

Almost surely, 2^16381868 is an apocalyptic number.

It is an amenable number.

16381868 is a deficient number, since it is larger than the sum of its proper divisors (13275172).

16381868 is a wasteful number, since it uses less digits than its factorization.

16381868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141256 (or 141254 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 16381868 is about 4047.4520380111. The cubic root of 16381868 is about 253.9731511084.

The spelling of 16381868 in words is "sixteen million, three hundred eighty-one thousand, eight hundred sixty-eight".