108916638 has 16 divisors (see below), whose sum is σ = 227304576. Its totient is φ = 34727000.

The previous prime is 108916631. The next prime is 108916649. The reversal of 108916638 is 836619801.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 108916638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108916631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394488 + ... + 394763.

It is an arithmetic number, because the mean of its divisors is an integer number (14206536).

Almost surely, 2^108916638 is an apocalyptic number.

108916638 is an abundant number, since it is smaller than the sum of its proper divisors (118387938).

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

108916638 is a wasteful number, since it uses less digits than its factorization.

108916638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789279.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 108916638 is about 10436.3134295593. The cubic root of 108916638 is about 477.5638108120.

The spelling of 108916638 in words is "one hundred eight million, nine hundred sixteen thousand, six hundred thirty-eight".