8196109965 has 12 divisors (see below), whose sum is σ = 14206590684. Its totient is φ = 4371258624.

The previous prime is 8196109951. The next prime is 8196109997. The reversal of 8196109965 is 5699016918.

8196109965 is a `hidden beast` number, since 8 + 19 + 610 + 9 + 9 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2993950089 + 5202159876 = 54717^2 + 72126^2 .

It is not a de Polignac number, because 8196109965 - 2¹¹ = 8196107917 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 91067844 + ... + 91067933.

It is an arithmetic number, because the mean of its divisors is an integer number (1183882557).

Almost surely, 2^8196109965 is an apocalyptic number.

It is an amenable number.

8196109965 is a deficient number, since it is larger than the sum of its proper divisors (6010480719).

8196109965 is a wasteful number, since it uses less digits than its factorization.

8196109965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182135788 (or 182135785 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The square root of 8196109965 is about 90532.3697082983. The cubic root of 8196109965 is about 2016.2107479098.

It can be divided in two parts, 819 and 6109965, that added together give a square (6110784 = 2472²).

The spelling of 8196109965 in words is "eight billion, one hundred ninety-six million, one hundred nine thousand, nine hundred sixty-five".