100218985 has 8 divisors (see below), whose sum is σ = 121957056. Its totient is φ = 79045680.

The previous prime is 100218973. The next prime is 100218991. The reversal of 100218985 is 589812001.

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

It is not a de Polignac number, because 100218985 - 2⁷ = 100218857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100218985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140799 + ... + 141508.

It is an arithmetic number, because the mean of its divisors is an integer number (15244632).

Almost surely, 2^100218985 is an apocalyptic number.

It is an amenable number.

100218985 is a deficient number, since it is larger than the sum of its proper divisors (21738071).

100218985 is an equidigital number, since it uses as much as digits as its factorization.

100218985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282383.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 100218985 is about 10010.9432622506. The cubic root of 100218985 is about 464.4974491222.

The spelling of 100218985 in words is "one hundred million, two hundred eighteen thousand, nine hundred eighty-five".