8516904638 has 8 divisors (see below), whose sum is σ = 13936753080. Its totient is φ = 3871320280.

The previous prime is 8516904631. The next prime is 8516904653. The reversal of 8516904638 is 8364096158.

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

It is a super-2 number, since 2×8516904638² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8516904631) 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, 193565993 + ... + 193566036.

It is an arithmetic number, because the mean of its divisors is an integer number (1742094135).

Almost surely, 2^8516904638 is an apocalyptic number.

8516904638 is a deficient number, since it is larger than the sum of its proper divisors (5419848442).

8516904638 is a wasteful number, since it uses less digits than its factorization.

8516904638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387132042.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 8516904638 is about 92287.0773077141. The cubic root of 8516904638 is about 2042.1795747072.

The spelling of 8516904638 in words is "eight billion, five hundred sixteen million, nine hundred four thousand, six hundred thirty-eight".