16804815906 has 8 divisors (see below), whose sum is σ = 33609631824. Its totient is φ = 5601605300.

The previous prime is 16804815901. The next prime is 16804815941. The reversal of 16804815906 is 60951840861.

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

16804815906 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (16804815901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400401320 + ... + 1400401331.

It is an arithmetic number, because the mean of its divisors is an integer number (4201203978).

Almost surely, 2^16804815906 is an apocalyptic number.

16804815906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16804815906 is a wasteful number, since it uses less digits than its factorization.

16804815906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800802656.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 16804815906 in words is "sixteen billion, eight hundred four million, eight hundred fifteen thousand, nine hundred six".