8199871849 has 8 divisors (see below), whose sum is σ = 8962432640. Its totient is φ = 7456139856.

The previous prime is 8199871847. The next prime is 8199871859. The reversal of 8199871849 is 9481789918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8199871849 - 2¹ = 8199871847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8199871847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4706289 + ... + 4708030.

It is an arithmetic number, because the mean of its divisors is an integer number (1120304080).

Almost surely, 2^8199871849 is an apocalyptic number.

It is an amenable number.

8199871849 is a deficient number, since it is larger than the sum of its proper divisors (762560791).

8199871849 is a wasteful number, since it uses less digits than its factorization.

8199871849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414399.

The product of its digits is 10450944, while the sum is 64.

The square root of 8199871849 is about 90553.1437830846. The cubic root of 8199871849 is about 2016.5191702734.

The spelling of 8199871849 in words is "eight billion, one hundred ninety-nine million, eight hundred seventy-one thousand, eight hundred forty-nine".