8168214784 has 18 divisors (see below), whose sum is σ = 16304522990. Its totient is φ = 4084107264.

The previous prime is 8168214781. The next prime is 8168214839. The reversal of 8168214784 is 4874128618.

It can be written as a sum of positive squares in only one way, i.e., 8123056384 + 45158400 = 90128^2 + 6720^2 .

It is not an unprimeable number, because it can be changed into a prime (8168214781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15953289 + ... + 15953800.

Almost surely, 2^8168214784 is an apocalyptic number.

It is an amenable number.

8168214784 is a deficient number, since it is larger than the sum of its proper divisors (8136308206).

8168214784 is an equidigital number, since it uses as much as digits as its factorization.

8168214784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31907105 (or 31907091 counting only the distinct ones).

The product of its digits is 688128, while the sum is 49.

The square root of 8168214784 is about 90378.1764808297. The cubic root of 8168214784 is about 2013.9207798047.

The spelling of 8168214784 in words is "eight billion, one hundred sixty-eight million, two hundred fourteen thousand, seven hundred eighty-four".