189845856 has 60 divisors (see below), whose sum is σ = 558339012. Its totient is φ = 63281088.

The previous prime is 189845849. The next prime is 189845857. The reversal of 189845856 is 658548981.

It is a happy number.

189845856 is a `hidden beast` number, since 189 + 8 + 458 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189845857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34030 + ... + 39213.

Almost surely, 2^189845856 is an apocalyptic number.

189845856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189845856 is an abundant number, since it is smaller than the sum of its proper divisors (368493156).

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

189845856 is an equidigital number, since it uses as much as digits as its factorization.

189845856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73265 (or 73248 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 189845856 is about 13778.4562270234. The cubic root of 189845856 is about 574.7341995188.

The spelling of 189845856 in words is "one hundred eighty-nine million, eight hundred forty-five thousand, eight hundred fifty-six".