2198184985 has 16 divisors (see below), whose sum is σ = 2711846592. Its totient is φ = 1709294400.

The previous prime is 2198184973. The next prime is 2198184991. The reversal of 2198184985 is 5894818912.

It is not a de Polignac number, because 2198184985 - 2¹⁹ = 2197660697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196390 + ... + 207280.

It is an arithmetic number, because the mean of its divisors is an integer number (169490412).

Almost surely, 2^2198184985 is an apocalyptic number.

It is an amenable number.

2198184985 is a deficient number, since it is larger than the sum of its proper divisors (513661607).

2198184985 is a wasteful number, since it uses less digits than its factorization.

2198184985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024.

The product of its digits is 1658880, while the sum is 55.

The square root of 2198184985 is about 46884.8054810938. The cubic root of 2198184985 is about 1300.2336828437.

The spelling of 2198184985 in words is "two billion, one hundred ninety-eight million, one hundred eighty-four thousand, nine hundred eighty-five".