16674896209 has 4 divisors (see below), whose sum is σ = 17249892660. Its totient is φ = 16099899760.

The previous prime is 16674896197. The next prime is 16674896243. The reversal of 16674896209 is 90269847661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12927007809 + 3747888400 = 113697^2 + 61220^2 .

It is a cyclic number.

It is not a de Polignac number, because 16674896209 - 2⁵ = 16674896177 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16674896509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287498182 + ... + 287498239.

It is an arithmetic number, because the mean of its divisors is an integer number (4312473165).

Almost surely, 2^16674896209 is an apocalyptic number.

It is an amenable number.

16674896209 is a deficient number, since it is larger than the sum of its proper divisors (574996451).

16674896209 is an equidigital number, since it uses as much as digits as its factorization.

16674896209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574996450.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 16674896209 in words is "sixteen billion, six hundred seventy-four million, eight hundred ninety-six thousand, two hundred nine".