108921018 has 8 divisors (see below), whose sum is σ = 217842048. Its totient is φ = 36307004.

The previous prime is 108921017. The next prime is 108921019. The reversal of 108921018 is 810129801.

It is an interprime number because it is at equal distance from previous prime (108921017) and next prime (108921019).

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

108921018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (108921017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9076746 + ... + 9076757.

It is an arithmetic number, because the mean of its divisors is an integer number (27230256).

Almost surely, 2^108921018 is an apocalyptic number.

108921018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

108921018 is a wasteful number, since it uses less digits than its factorization.

108921018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153508.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 108921018 is about 10436.5232716648. The cubic root of 108921018 is about 477.5702123483.

The spelling of 108921018 in words is "one hundred eight million, nine hundred twenty-one thousand, eighteen".