85185189 has 20 divisors (see below), whose sum is σ = 133951840. Its totient is φ = 53800200.

The previous prime is 85185187. The next prime is 85185229. The reversal of 85185189 is 98158158.

85185189 is a `hidden beast` number, since 8 + 518 + 51 + 89 = 666.

It is not a de Polignac number, because 85185189 - 2¹ = 85185187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85185187) 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 19 ways as a sum of consecutive naturals, for example, 26137 + ... + 29214.

It is an arithmetic number, because the mean of its divisors is an integer number (6697592).

Almost surely, 2^85185189 is an apocalyptic number.

It is an amenable number.

85185189 is a deficient number, since it is larger than the sum of its proper divisors (48766651).

85185189 is a wasteful number, since it uses less digits than its factorization.

85185189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55382 (or 55373 counting only the distinct ones).

The product of its digits is 115200, while the sum is 45.

The square root of 85185189 is about 9229.5822765714. The cubic root of 85185189 is about 440.0020471668.

The spelling of 85185189 in words is "eighty-five million, one hundred eighty-five thousand, one hundred eighty-nine".