8226781166 has 4 divisors (see below), whose sum is σ = 12340171752. Its totient is φ = 4113390582.

The previous prime is 8226781163. The next prime is 8226781183. The reversal of 8226781166 is 6611876228.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8226781166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8226781163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2056695290 + ... + 2056695293.

It is an arithmetic number, because the mean of its divisors is an integer number (3085042938).

Almost surely, 2^8226781166 is an apocalyptic number.

8226781166 is a deficient number, since it is larger than the sum of its proper divisors (4113390586).

8226781166 is a wasteful number, since it uses less digits than its factorization.

8226781166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113390585.

The product of its digits is 387072, while the sum is 47.

The square root of 8226781166 is about 90701.6050905385. The cubic root of 8226781166 is about 2018.7226154228.

The spelling of 8226781166 in words is "eight billion, two hundred twenty-six million, seven hundred eighty-one thousand, one hundred sixty-six".