8638475867 has 16 divisors (see below), whose sum is σ = 9917159424. Its totient is φ = 7371000000.

The previous prime is 8638475851. The next prime is 8638475887. The reversal of 8638475867 is 7685748368.

It is not a de Polignac number, because 8638475867 - 2⁴ = 8638475851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8638475887) 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, 3836492 + ... + 3838742.

It is an arithmetic number, because the mean of its divisors is an integer number (619822464).

Almost surely, 2^8638475867 is an apocalyptic number.

8638475867 is a deficient number, since it is larger than the sum of its proper divisors (1278683557).

8638475867 is a wasteful number, since it uses less digits than its factorization.

8638475867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490.

The product of its digits is 54190080, while the sum is 62.

The square root of 8638475867 is about 92943.4014172066. The cubic root of 8638475867 is about 2051.8504700845.

The spelling of 8638475867 in words is "eight billion, six hundred thirty-eight million, four hundred seventy-five thousand, eight hundred sixty-seven".