16808913 has 24 divisors (see below), whose sum is σ = 27346176. Its totient is φ = 9856800.

The previous prime is 16808881. The next prime is 16808921. The reversal of 16808913 is 31980861.

It is not a de Polignac number, because 16808913 - 2⁵ = 16808881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16808963) 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 23 ways as a sum of consecutive naturals, for example, 331 + ... + 5807.

It is an arithmetic number, because the mean of its divisors is an integer number (1139424).

Almost surely, 2^16808913 is an apocalyptic number.

It is an amenable number.

16808913 is a deficient number, since it is larger than the sum of its proper divisors (10537263).

16808913 is a wasteful number, since it uses less digits than its factorization.

16808913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525 (or 5522 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 16808913 is about 4099.8674368813. The cubic root of 16808913 is about 256.1611178555.

The spelling of 16808913 in words is "sixteen million, eight hundred eight thousand, nine hundred thirteen".