8485522181 has 16 divisors (see below), whose sum is σ = 9108167040. Its totient is φ = 7887232320.

The previous prime is 8485522163. The next prime is 8485522211. The reversal of 8485522181 is 1812255848.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8485522181 is a prime.

It is a super-2 number, since 2×8485522181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8485522121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80015 + ... + 152883.

It is an arithmetic number, because the mean of its divisors is an integer number (569260440).

Almost surely, 2^8485522181 is an apocalyptic number.

It is an amenable number.

8485522181 is a deficient number, since it is larger than the sum of its proper divisors (622644859).

8485522181 is a wasteful number, since it uses less digits than its factorization.

8485522181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73036.

The product of its digits is 204800, while the sum is 44.

The square root of 8485522181 is about 92116.8941128608. The cubic root of 8485522181 is about 2039.6681971090.

The spelling of 8485522181 in words is "eight billion, four hundred eighty-five million, five hundred twenty-two thousand, one hundred eighty-one".