855844188 has 24 divisors (see below), whose sum is σ = 2050942992. Its totient is φ = 277570944.

The previous prime is 855844177. The next prime is 855844207. The reversal of 855844188 is 881448558.

It is a self number, because there is not a number n which added to its sum of digits gives 855844188.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 963345 + ... + 964232.

It is an arithmetic number, because the mean of its divisors is an integer number (85455958).

Almost surely, 2^855844188 is an apocalyptic number.

It is an amenable number.

855844188 is an abundant number, since it is smaller than the sum of its proper divisors (1195098804).

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

855844188 is a wasteful number, since it uses less digits than its factorization.

855844188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927621 (or 1927619 counting only the distinct ones).

The product of its digits is 1638400, while the sum is 51.

The square root of 855844188 is about 29254.8147832113. The cubic root of 855844188 is about 949.4342663067.

The spelling of 855844188 in words is "eight hundred fifty-five million, eight hundred forty-four thousand, one hundred eighty-eight".