16858404185 has 24 divisors (see below), whose sum is σ = 24556136256. Its totient is φ = 11057434080.

The previous prime is 16858404133. The next prime is 16858404271. The reversal of 16858404185 is 58140485861.

It is not a de Polignac number, because 16858404185 - 2¹⁰ = 16858403161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1490231 + ... + 1501500.

It is an arithmetic number, because the mean of its divisors is an integer number (1023172344).

Almost surely, 2^16858404185 is an apocalyptic number.

It is an amenable number.

16858404185 is a deficient number, since it is larger than the sum of its proper divisors (7697732071).

16858404185 is a wasteful number, since it uses less digits than its factorization.

16858404185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991773 (or 2991766 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 16858404185 in words is "sixteen billion, eight hundred fifty-eight million, four hundred four thousand, one hundred eighty-five".