8128550418 has 32 divisors (see below), whose sum is σ = 16950159360. Its totient is φ = 2595479040.

The previous prime is 8128550401. The next prime is 8128550429. The reversal of 8128550418 is 8140558218.

It is a self number, because there is not a number n which added to its sum of digits gives 8128550418.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 161823 + ... + 206018.

It is an arithmetic number, because the mean of its divisors is an integer number (529692480).

Almost surely, 2^8128550418 is an apocalyptic number.

8128550418 is an abundant number, since it is smaller than the sum of its proper divisors (8821608942).

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

8128550418 is a wasteful number, since it uses less digits than its factorization.

8128550418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368002.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 8128550418 is about 90158.4739112192. The cubic root of 8128550418 is about 2010.6556624392.

The spelling of 8128550418 in words is "eight billion, one hundred twenty-eight million, five hundred fifty thousand, four hundred eighteen".