2198328085 has 4 divisors (see below), whose sum is σ = 2637993708. Its totient is φ = 1758662464.

The previous prime is 2198328043. The next prime is 2198328137. The reversal of 2198328085 is 5808238912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1068897636 + 1129430449 = 32694^2 + 33607^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198328085 - 2²⁹ = 1661457173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219832804 + ... + 219832813.

It is an arithmetic number, because the mean of its divisors is an integer number (659498427).

Almost surely, 2^2198328085 is an apocalyptic number.

It is an amenable number.

2198328085 is a deficient number, since it is larger than the sum of its proper divisors (439665623).

2198328085 is an equidigital number, since it uses as much as digits as its factorization.

2198328085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439665622.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 2198328085 is about 46886.3315370269. The cubic root of 2198328085 is about 1300.2618969391.

The spelling of 2198328085 in words is "two billion, one hundred ninety-eight million, three hundred twenty-eight thousand, eighty-five".