8681083581 has 8 divisors (see below), whose sum is σ = 11615679520. Its totient is φ = 5766938352.

The previous prime is 8681083549. The next prime is 8681083583. The reversal of 8681083581 is 1853801868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8681083581 - 2⁵ = 8681083549 is a prime.

It is a super-2 number, since 2×8681083581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8681083581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681083583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5111686 + ... + 5113383.

It is an arithmetic number, because the mean of its divisors is an integer number (1451959940).

Almost surely, 2^8681083581 is an apocalyptic number.

It is an amenable number.

8681083581 is a deficient number, since it is larger than the sum of its proper divisors (2934595939).

8681083581 is a wasteful number, since it uses less digits than its factorization.

8681083581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225355.

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 8681083581 is about 93172.3327012907. The cubic root of 8681083581 is about 2055.2183988911.

The spelling of 8681083581 in words is "eight billion, six hundred eighty-one million, eighty-three thousand, five hundred eighty-one".