8216918927 has 24 divisors (see below), whose sum is σ = 9718077744. Its totient is φ = 6925830912.

The previous prime is 8216918921. The next prime is 8216918947. The reversal of 8216918927 is 7298196128.

It is not a de Polignac number, because 8216918927 - 2¹⁰ = 8216917903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216918921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2220743 + ... + 2224439.

It is an arithmetic number, because the mean of its divisors is an integer number (404919906).

Almost surely, 2^8216918927 is an apocalyptic number.

8216918927 is a deficient number, since it is larger than the sum of its proper divisors (1501158817).

8216918927 is a wasteful number, since it uses less digits than its factorization.

8216918927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455 (or 4448 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The square root of 8216918927 is about 90647.2223898780. Note that the first 3 decimals coincide. The cubic root of 8216918927 is about 2017.9156134507.

The spelling of 8216918927 in words is "eight billion, two hundred sixteen million, nine hundred eighteen thousand, nine hundred twenty-seven".