8166023940 has 24 divisors (see below), whose sum is σ = 22864867200. Its totient is φ = 2177606368.

The previous prime is 8166023939. The next prime is 8166023947. The reversal of 8166023940 is 493206618.

It is not an unprimeable number, because it can be changed into a prime (8166023947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68050140 + ... + 68050259.

It is an arithmetic number, because the mean of its divisors is an integer number (952702800).

Almost surely, 2^8166023940 is an apocalyptic number.

It is an amenable number.

8166023940 is an abundant number, since it is smaller than the sum of its proper divisors (14698843260).

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

8166023940 is a wasteful number, since it uses less digits than its factorization.

8166023940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136100411 (or 136100409 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 8166023940 is about 90366.0552419989. The cubic root of 8166023940 is about 2013.7407086016.

The spelling of 8166023940 in words is "eight billion, one hundred sixty-six million, twenty-three thousand, nine hundred forty".