189368422992 has 320 divisors, whose sum is σ = 635159347200. Its totient is φ = 52900231680.

The previous prime is 189368422973. The next prime is 189368423039. The reversal of 189368422992 is 299224863981.

189368422992 is a `hidden beast` number, since 189 + 368 + 4 + 2 + 2 + 9 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 34074678 + ... + 34080234.

It is an arithmetic number, because the mean of its divisors is an integer number (1984872960).

Almost surely, 2^189368422992 is an apocalyptic number.

189368422992 is a gapful number since it is divisible by the number (12) 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 189368422992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317579673600).

189368422992 is an abundant number, since it is smaller than the sum of its proper divisors (445790924208).

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

189368422992 is a wasteful number, since it uses less digits than its factorization.

189368422992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831 (or 5819 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 189368422992 in words is "one hundred eighty-nine billion, three hundred sixty-eight million, four hundred twenty-two thousand, nine hundred ninety-two".