18016216828 has 12 divisors (see below), whose sum is σ = 31530002112. Its totient is φ = 9007644800.

The previous prime is 18016216793. The next prime is 18016216849. The reversal of 18016216828 is 82861261081.

It is a super-3 number, since 3×18016216828³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 19573 + ... + 190828.

It is an arithmetic number, because the mean of its divisors is an integer number (2627500176).

Almost surely, 2^18016216828 is an apocalyptic number.

It is an amenable number.

18016216828 is a deficient number, since it is larger than the sum of its proper divisors (13513785284).

18016216828 is a wasteful number, since it uses less digits than its factorization.

18016216828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231812 (or 231810 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The spelling of 18016216828 in words is "eighteen billion, sixteen million, two hundred sixteen thousand, eight hundred twenty-eight".