16818306804 has 48 divisors (see below), whose sum is σ = 46957099840. Its totient is φ = 5174863200.

The previous prime is 16818306803. The next prime is 16818306811. The reversal of 16818306804 is 40860381861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16818306804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16818306803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5988022 + ... + 5990829.

Almost surely, 2^16818306804 is an apocalyptic number.

It is an amenable number.

16818306804 is an abundant number, since it is smaller than the sum of its proper divisors (30138793036).

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

16818306804 is a wasteful number, since it uses less digits than its factorization.

16818306804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11978877 (or 11978869 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 16818306804 in words is "sixteen billion, eight hundred eighteen million, three hundred six thousand, eight hundred four".