189471793368 has 512 divisors, whose sum is σ = 586297958400. Its totient is φ = 50560473600.

The previous prime is 189471793351. The next prime is 189471793457. The reversal of 189471793368 is 863397174981.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 189471793299 and 189471793308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1770764371 + ... + 1770764477.

It is an arithmetic number, because the mean of its divisors is an integer number (1145113200).

Almost surely, 2^189471793368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189471793368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293148979200).

189471793368 is an abundant number, since it is smaller than the sum of its proper divisors (396826165032).

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

189471793368 is a wasteful number, since it uses less digits than its factorization.

189471793368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 250 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 66.

The spelling of 189471793368 in words is "one hundred eighty-nine billion, four hundred seventy-one million, seven hundred ninety-three thousand, three hundred sixty-eight".