16318899 has 6 divisors (see below), whose sum is σ = 23571756. Its totient is φ = 10879260.

The previous prime is 16318871. The next prime is 16318933. The reversal of 16318899 is 99881361.

16318899 is a `hidden beast` number, since 1 + 631 + 8 + 8 + 9 + 9 = 666.

16318899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16318899 - 2⁵ = 16318867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16318399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 906597 + ... + 906614.

It is an arithmetic number, because the mean of its divisors is an integer number (3928626).

Almost surely, 2^16318899 is an apocalyptic number.

16318899 is a deficient number, since it is larger than the sum of its proper divisors (7252857).

16318899 is a wasteful number, since it uses less digits than its factorization.

16318899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813217 (or 1813214 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 16318899 is about 4039.6657039909. The cubic root of 16318899 is about 253.6473240025.

The spelling of 16318899 in words is "sixteen million, three hundred eighteen thousand, eight hundred ninety-nine".