855189210 has 64 divisors (see below), whose sum is σ = 2072936448. Its totient is φ = 225789504.

The previous prime is 855189191. The next prime is 855189217. The reversal of 855189210 is 12981558.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (855189217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2232679 + ... + 2233061.

It is an arithmetic number, because the mean of its divisors is an integer number (32389632).

Almost surely, 2^855189210 is an apocalyptic number.

855189210 is an abundant number, since it is smaller than the sum of its proper divisors (1217747238).

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

855189210 is a wasteful number, since it uses less digits than its factorization.

855189210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 855189210 is about 29243.6182781817. The cubic root of 855189210 is about 949.1920036498.

The spelling of 855189210 in words is "eight hundred fifty-five million, one hundred eighty-nine thousand, two hundred ten".