2198119865 has 16 divisors (see below), whose sum is σ = 2710742160. Its totient is φ = 1709890560.

The previous prime is 2198119849. The next prime is 2198119877. The reversal of 2198119865 is 5689118912.

It can be written as a sum of positive squares in 8 ways, for example, as 563777536 + 1634342329 = 23744^2 + 40427^2 .

It is not a de Polignac number, because 2198119865 - 2⁴ = 2198119849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419381 + ... + 424589.

It is an arithmetic number, because the mean of its divisors is an integer number (169421385).

Almost surely, 2^2198119865 is an apocalyptic number.

It is an amenable number.

2198119865 is a deficient number, since it is larger than the sum of its proper divisors (512622295).

2198119865 is a wasteful number, since it uses less digits than its factorization.

2198119865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7532.

The product of its digits is 311040, while the sum is 50.

The square root of 2198119865 is about 46884.1110078884. Note that the first 3 decimals coincide. The cubic root of 2198119865 is about 1300.2208431518.

The spelling of 2198119865 in words is "two billion, one hundred ninety-eight million, one hundred nineteen thousand, eight hundred sixty-five".