8633638842 has 32 divisors (see below), whose sum is σ = 17641411200. Its totient is φ = 2816191488.

The previous prime is 8633638829. The next prime is 8633638859. The reversal of 8633638842 is 2488363368.

It is a super-2 number, since 2×8633638842² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31542 + ... + 135137.

It is an arithmetic number, because the mean of its divisors is an integer number (551294100).

Almost surely, 2^8633638842 is an apocalyptic number.

8633638842 is an abundant number, since it is smaller than the sum of its proper divisors (9007772358).

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

8633638842 is a wasteful number, since it uses less digits than its factorization.

8633638842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166870.

The product of its digits is 3981312, while the sum is 51.

The square root of 8633638842 is about 92917.3764265866. The cubic root of 8633638842 is about 2051.4674277829.

The spelling of 8633638842 in words is "eight billion, six hundred thirty-three million, six hundred thirty-eight thousand, eight hundred forty-two".