2198719869 has 4 divisors (see below), whose sum is σ = 2931626496. Its totient is φ = 1465813244.

The previous prime is 2198719819. The next prime is 2198719927. The reversal of 2198719869 is 9689178912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2198719869 - 2²⁰ = 2197671293 is a prime.

It is a super-2 number, since 2×2198719869² = 9668738124670754322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198719819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366453309 + ... + 366453314.

It is an arithmetic number, because the mean of its divisors is an integer number (732906624).

Almost surely, 2^2198719869 is an apocalyptic number.

It is an amenable number.

2198719869 is a deficient number, since it is larger than the sum of its proper divisors (732906627).

2198719869 is an equidigital number, since it uses as much as digits as its factorization.

2198719869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732906626.

The product of its digits is 3919104, while the sum is 60.

The square root of 2198719869 is about 46890.5093702340. The cubic root of 2198719869 is about 1300.3391361753.

The spelling of 2198719869 in words is "two billion, one hundred ninety-eight million, seven hundred nineteen thousand, eight hundred sixty-nine".