8512840138 has 8 divisors (see below), whose sum is σ = 13930102080. Its totient is φ = 3869472780.

The previous prime is 8512840129. The next prime is 8512840139. The reversal of 8512840138 is 8310482158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8512840138.

It is not an unprimeable number, because it can be changed into a prime (8512840139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193473618 + ... + 193473661.

It is an arithmetic number, because the mean of its divisors is an integer number (1741262760).

Almost surely, 2^8512840138 is an apocalyptic number.

8512840138 is a deficient number, since it is larger than the sum of its proper divisors (5417261942).

8512840138 is a wasteful number, since it uses less digits than its factorization.

8512840138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386947292.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 8512840138 is about 92265.0537202466. The cubic root of 8512840138 is about 2041.8546616869.

The spelling of 8512840138 in words is "eight billion, five hundred twelve million, eight hundred forty thousand, one hundred thirty-eight".