8691983811 has 48 divisors (see below), whose sum is σ = 14456752128. Its totient is φ = 4929595200.

The previous prime is 8691983809. The next prime is 8691983819. The reversal of 8691983811 is 1183891968.

It is not a de Polignac number, because 8691983811 - 2¹ = 8691983809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8691983819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5308885 + ... + 5310521.

It is an arithmetic number, because the mean of its divisors is an integer number (301182336).

Almost surely, 2^8691983811 is an apocalyptic number.

8691983811 is a deficient number, since it is larger than the sum of its proper divisors (5764768317).

8691983811 is a wasteful number, since it uses less digits than its factorization.

8691983811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2229 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 8691983811 is about 93230.8093443364. The cubic root of 8691983811 is about 2056.0782371520.

The spelling of 8691983811 in words is "eight billion, six hundred ninety-one million, nine hundred eighty-three thousand, eight hundred eleven".