8081608940 has 12 divisors (see below), whose sum is σ = 16971378816. Its totient is φ = 3232643568.

The previous prime is 8081608897. The next prime is 8081608967. The reversal of 8081608940 is 498061808.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8081608891 and 8081608900.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 202040204 + ... + 202040243.

It is an arithmetic number, because the mean of its divisors is an integer number (1414281568).

Almost surely, 2^8081608940 is an apocalyptic number.

It is an amenable number.

8081608940 is an abundant number, since it is smaller than the sum of its proper divisors (8889769876).

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

8081608940 is a wasteful number, since it uses less digits than its factorization.

8081608940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404080456 (or 404080454 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 8081608940 is about 89897.7693827828. The cubic root of 8081608940 is about 2006.7777501055. Note that the first 4 decimals are identical.

The spelling of 8081608940 in words is "eight billion, eighty-one million, six hundred eight thousand, nine hundred forty".