8450197128 has 64 divisors (see below), whose sum is σ = 23496912000. Its totient is φ = 2813835456.

The previous prime is 8450197117. The next prime is 8450197139. The reversal of 8450197128 is 8217910548.

8450197128 is a `hidden beast` number, since 8 + 450 + 197 + 1 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (8450197117) and next prime (8450197139).

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, 195733 + ... + 234971.

It is an arithmetic number, because the mean of its divisors is an integer number (367139250).

Almost surely, 2^8450197128 is an apocalyptic number.

It is an amenable number.

8450197128 is an abundant number, since it is smaller than the sum of its proper divisors (15046714872).

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

8450197128 is a wasteful number, since it uses less digits than its factorization.

8450197128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40251 (or 40241 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 8450197128 is about 91924.9537829636. The cubic root of 8450197128 is about 2036.8338949365.

The spelling of 8450197128 in words is "eight billion, four hundred fifty million, one hundred ninety-seven thousand, one hundred twenty-eight".