8181612708 has 12 divisors (see below), whose sum is σ = 19090429680. Its totient is φ = 2727204232.

The previous prime is 8181612683. The next prime is 8181612727. The reversal of 8181612708 is 8072161818.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 8181612708.

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, 340900518 + ... + 340900541.

It is an arithmetic number, because the mean of its divisors is an integer number (1590869140).

Almost surely, 2^8181612708 is an apocalyptic number.

It is an amenable number.

8181612708 is an abundant number, since it is smaller than the sum of its proper divisors (10908816972).

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

8181612708 is a wasteful number, since it uses less digits than its factorization.

8181612708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681801066 (or 681801064 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 42.

The square root of 8181612708 is about 90452.2675669328. The cubic root of 8181612708 is about 2015.0212903029.

The spelling of 8181612708 in words is "eight billion, one hundred eighty-one million, six hundred twelve thousand, seven hundred eight".