8521418208 has 48 divisors (see below), whose sum is σ = 22620079440. Its totient is φ = 2808554496.

The previous prime is 8521418197. The next prime is 8521418209. The reversal of 8521418208 is 8028141258.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×8521418208² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521418209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490135 + ... + 507222.

It is an arithmetic number, because the mean of its divisors is an integer number (471251655).

Almost surely, 2^8521418208 is an apocalyptic number.

It is an amenable number.

8521418208 is an abundant number, since it is smaller than the sum of its proper divisors (14098661232).

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

8521418208 is a wasteful number, since it uses less digits than its factorization.

8521418208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997459 (or 997451 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 39.

The square root of 8521418208 is about 92311.5280341518. The cubic root of 8521418208 is about 2042.5402649285.

The spelling of 8521418208 in words is "eight billion, five hundred twenty-one million, four hundred eighteen thousand, two hundred eight".