16681129 has 8 divisors (see below), whose sum is σ = 17075520. Its totient is φ = 16290576.

The previous prime is 16681123. The next prime is 16681139. The reversal of 16681129 is 92118661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16681129 - 2⁷ = 16681001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16681094 and 16681103.

It is not an unprimeable number, because it can be changed into a prime (16681123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 10699.

It is an arithmetic number, because the mean of its divisors is an integer number (2134440).

Almost surely, 2^16681129 is an apocalyptic number.

It is an amenable number.

16681129 is a deficient number, since it is larger than the sum of its proper divisors (394391).

16681129 is a wasteful number, since it uses less digits than its factorization.

16681129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its digits is 5184, while the sum is 34.

The square root of 16681129 is about 4084.2537874133. The cubic root of 16681129 is about 255.5103402537.

The spelling of 16681129 in words is "sixteen million, six hundred eighty-one thousand, one hundred twenty-nine".