189849523422168 has 384 divisors, whose sum is σ = 528009850368000. Its totient is φ = 61608922341120.

The previous prime is 189849523422133. The next prime is 189849523422173. The reversal of 189849523422168 is 861224325948981.

189849523422168 is a `hidden beast` number, since 1 + 8 + 9 + 8 + 49 + 523 + 42 + 2 + 16 + 8 = 666.

189849523422168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 189849523422096 and 189849523422105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 200474681071 + ... + 200474682017.

It is an arithmetic number, because the mean of its divisors is an integer number (1375025652000).

Almost surely, 2^{189849523422168} is an apocalyptic number.

189849523422168 is a gapful number since it is divisible by the number (18) 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 189849523422168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264004925184000).

189849523422168 is an abundant number, since it is smaller than the sum of its proper divisors (338160326945832).

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

189849523422168 is a wasteful number, since it uses less digits than its factorization.

189849523422168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395 (or 2388 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 72.

The spelling of 189849523422168 in words is "one hundred eighty-nine trillion, eight hundred forty-nine billion, five hundred twenty-three million, four hundred twenty-two thousand, one hundred sixty-eight".