8198871111 has 20 divisors (see below), whose sum is σ = 12780207792. Its totient is φ = 5228264448.

The previous prime is 8198871101. The next prime is 8198871167. The reversal of 8198871111 is 1111788918.

It is not a de Polignac number, because 8198871111 - 2³⁰ = 7125129287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8198871101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2198586 + ... + 2202311.

Almost surely, 2^8198871111 is an apocalyptic number.

8198871111 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8198871111 is a deficient number, since it is larger than the sum of its proper divisors (4581336681).

8198871111 is a wasteful number, since it uses less digits than its factorization.

8198871111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400932 (or 4400923 counting only the distinct ones).

The product of its digits is 32256, while the sum is 45.

The square root of 8198871111 is about 90547.6179200756. The cubic root of 8198871111 is about 2016.4371328343.

The spelling of 8198871111 in words is "eight billion, one hundred ninety-eight million, eight hundred seventy-one thousand, one hundred eleven".