9281281712 has 20 divisors (see below), whose sum is σ = 18048847776. Its totient is φ = 4623514560.

The previous prime is 9281281697. The next prime is 9281281717. The reversal of 9281281712 is 2171821829.

It is a super-2 number, since 2×9281281712² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9281281712.

It is not an unprimeable number, because it can be changed into a prime (9281281717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065923 + ... + 1074594.

Almost surely, 2^9281281712 is an apocalyptic number.

It is an amenable number.

9281281712 is a deficient number, since it is larger than the sum of its proper divisors (8767566064).

9281281712 is a wasteful number, since it uses less digits than its factorization.

9281281712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140796 (or 2140790 counting only the distinct ones).

The product of its digits is 32256, while the sum is 41.

The square root of 9281281712 is about 96339.4089249047. The cubic root of 9281281712 is about 2101.5318914776.

The spelling of 9281281712 in words is "nine billion, two hundred eighty-one million, two hundred eighty-one thousand, seven hundred twelve".