8478618486 has 128 divisors (see below), whose sum is σ = 19099293696. Its totient is φ = 2492743680.

The previous prime is 8478618469. The next prime is 8478618497. The reversal of 8478618486 is 6848168748.

It is a super-2 number, since 2×8478618486² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40182921 + ... + 40183131.

It is an arithmetic number, because the mean of its divisors is an integer number (149213232).

Almost surely, 2^8478618486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8478618486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9549646848).

8478618486 is an abundant number, since it is smaller than the sum of its proper divisors (10620675210).

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

8478618486 is a wasteful number, since it uses less digits than its factorization.

8478618486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its digits is 16515072, while the sum is 60.

The square root of 8478618486 is about 92079.4140185525. The cubic root of 8478618486 is about 2039.1148990984.

The spelling of 8478618486 in words is "eight billion, four hundred seventy-eight million, six hundred eighteen thousand, four hundred eighty-six".