109885187 has 2 divisors, whose sum is σ = 109885188. Its totient is φ = 109885186.

The previous prime is 109885177. The next prime is 109885231. The reversal of 109885187 is 781588901.

It is a weak prime.

It is an emirp because it is prime and its reverse (781588901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109885187 - 2⁶ = 109885123 is a prime.

It is not a weakly prime, because it can be changed into another prime (109885177) 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 as a sum of consecutive naturals, namely, 54942593 + 54942594.

It is an arithmetic number, because the mean of its divisors is an integer number (54942594).

Almost surely, 2^109885187 is an apocalyptic number.

109885187 is a deficient number, since it is larger than the sum of its proper divisors (1).

109885187 is an equidigital number, since it uses as much as digits as its factorization.

109885187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 47.

The square root of 109885187 is about 10482.6135576964. The cubic root of 109885187 is about 478.9752254654.

The spelling of 109885187 in words is "one hundred nine million, eight hundred eighty-five thousand, one hundred eighty-seven".