8166944000 has 72 divisors (see below), whose sum is σ = 20344958088. Its totient is φ = 3266764800.

The previous prime is 8166943991. The next prime is 8166944039. The reversal of 8166944000 is 4496618.

It can be written as a sum of positive squares in 4 ways, for example, as 795691264 + 7371252736 = 28208^2 + 85856^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95609 + ... + 159608.

Almost surely, 2^8166944000 is an apocalyptic number.

8166944000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8166944000 is an abundant number, since it is smaller than the sum of its proper divisors (12178014088).

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

8166944000 is an equidigital number, since it uses as much as digits as its factorization.

8166944000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255248 (or 255224 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 8166944000 is about 90371.1458375958. The cubic root of 8166944000 is about 2013.8163346636.

The spelling of 8166944000 in words is "eight billion, one hundred sixty-six million, nine hundred forty-four thousand".