100864185 has 16 divisors (see below), whose sum is σ = 161507520. Its totient is φ = 53752640.

The previous prime is 100864163. The next prime is 100864219. The reversal of 100864185 is 581468001.

It is not a de Polignac number, because 100864185 - 2⁹ = 100863673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34771 + ... + 37559.

It is an arithmetic number, because the mean of its divisors is an integer number (10094220).

Almost surely, 2^100864185 is an apocalyptic number.

100864185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100864185 is a deficient number, since it is larger than the sum of its proper divisors (60643335).

100864185 is a wasteful number, since it uses less digits than its factorization.

100864185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 100864185 is about 10043.1162992370. The cubic root of 100864185 is about 465.4921139940.

The spelling of 100864185 in words is "one hundred million, eight hundred sixty-four thousand, one hundred eighty-five".