8161844766 has 8 divisors (see below), whose sum is σ = 16323689544. Its totient is φ = 2720614920.

The previous prime is 8161844741. The next prime is 8161844771. The reversal of 8161844766 is 6674481618.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

8161844766 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680153725 + ... + 680153736.

It is an arithmetic number, because the mean of its divisors is an integer number (2040461193).

Almost surely, 2^8161844766 is an apocalyptic number.

8161844766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8161844766 is a wasteful number, since it uses less digits than its factorization.

8161844766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360307466.

The product of its digits is 1548288, while the sum is 51.

The square root of 8161844766 is about 90342.9286994837. The cubic root of 8161844766 is about 2013.3971220147.

The spelling of 8161844766 in words is "eight billion, one hundred sixty-one million, eight hundred forty-four thousand, seven hundred sixty-six".