8199170819 has 4 divisors (see below), whose sum is σ = 9370480944. Its totient is φ = 7027860696.

The previous prime is 8199170797. The next prime is 8199170827. The reversal of 8199170819 is 9180719918.

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

It is a cyclic number.

It is not a de Polignac number, because 8199170819 - 2²⁰ = 8198122243 is a prime.

It is a super-2 number, since 2×8199170819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8199170849) 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, 585655052 + ... + 585655065.

It is an arithmetic number, because the mean of its divisors is an integer number (2342620236).

Almost surely, 2^8199170819 is an apocalyptic number.

8199170819 is a deficient number, since it is larger than the sum of its proper divisors (1171310125).

8199170819 is a wasteful number, since it uses less digits than its factorization.

8199170819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171310124.

The product of its (nonzero) digits is 326592, while the sum is 53.

The square root of 8199170819 is about 90549.2728794660. The cubic root of 8199170819 is about 2016.4617026793.

The spelling of 8199170819 in words is "eight billion, one hundred ninety-nine million, one hundred seventy thousand, eight hundred nineteen".