8691944195 has 16 divisors (see below), whose sum is σ = 12047872608. Its totient is φ = 5949565440.

The previous prime is 8691944143. The next prime is 8691944197. The reversal of 8691944195 is 5914491968.

It is not a de Polignac number, because 8691944195 - 2²² = 8687749891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8691944195.

It is not an unprimeable number, because it can be changed into a prime (8691944197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647164 + ... + 4649033.

It is an arithmetic number, because the mean of its divisors is an integer number (752992038).

Almost surely, 2^8691944195 is an apocalyptic number.

8691944195 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8691944195 is a deficient number, since it is larger than the sum of its proper divisors (3355928413).

8691944195 is a wasteful number, since it uses less digits than its factorization.

8691944195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9296230.

The product of its digits is 2799360, while the sum is 56.

The square root of 8691944195 is about 93230.5968821395. The cubic root of 8691944195 is about 2056.0751134416.

The spelling of 8691944195 in words is "eight billion, six hundred ninety-one million, nine hundred forty-four thousand, one hundred ninety-five".