189627897312 has 720 divisors, whose sum is σ = 688265424000. Its totient is φ = 50924837376.

The previous prime is 189627897289. The next prime is 189627897379. The reversal of 189627897312 is 213798726981.

189627897312 is a `hidden beast` number, since 189 + 62 + 7 + 89 + 7 + 312 = 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 self number, because there is not a number n which added to its sum of digits gives 189627897312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 431953989 + ... + 431954427.

It is an arithmetic number, because the mean of its divisors is an integer number (955924200).

Almost surely, 2^189627897312 is an apocalyptic number.

189627897312 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 189627897312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344132712000).

189627897312 is an abundant number, since it is smaller than the sum of its proper divisors (498637526688).

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

189627897312 is a wasteful number, since it uses less digits than its factorization.

189627897312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 649 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The spelling of 189627897312 in words is "one hundred eighty-nine billion, six hundred twenty-seven million, eight hundred ninety-seven thousand, three hundred twelve".