189985185360 has 240 divisors, whose sum is σ = 644820943104. Its totient is φ = 50125022208.

The previous prime is 189985185349. The next prime is 189985185413. The reversal of 189985185360 is 63581589981.

189985185360 is a `hidden beast` number, since 1 + 8 + 9 + 9 + 8 + 518 + 53 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109627054 + ... + 109628786.

Almost surely, 2^189985185360 is an apocalyptic number.

189985185360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189985185360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322410471552).

189985185360 is an abundant number, since it is smaller than the sum of its proper divisors (454835757744).

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

189985185360 is a wasteful number, since it uses less digits than its factorization.

189985185360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 189985185360 in words is "one hundred eighty-nine billion, nine hundred eighty-five million, one hundred eighty-five thousand, three hundred sixty".