108516638 has 8 divisors (see below), whose sum is σ = 171342120. Its totient is φ = 51402600.

The previous prime is 108516623. The next prime is 108516643. The reversal of 108516638 is 836615801.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2855701 = 108516638 / (1 + 0 + 8 + 5 + 1 + 6 + 6 + 3 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427813 + ... + 1427888.

It is an arithmetic number, because the mean of its divisors is an integer number (21417765).

Almost surely, 2^108516638 is an apocalyptic number.

108516638 is a deficient number, since it is larger than the sum of its proper divisors (62825482).

108516638 is a wasteful number, since it uses less digits than its factorization.

108516638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855722.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 108516638 is about 10417.1319469420. The cubic root of 108516638 is about 476.9784706370.

The spelling of 108516638 in words is "one hundred eight million, five hundred sixteen thousand, six hundred thirty-eight".