189193327620 has 144 divisors (see below), whose sum is σ = 582519162624. Its totient is φ = 45846028800.

The previous prime is 189193327613. The next prime is 189193327633. The reversal of 189193327620 is 26723391981.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26357472 + ... + 26364648.

Almost surely, 2^189193327620 is an apocalyptic number.

189193327620 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 189193327620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291259581312).

189193327620 is an abundant number, since it is smaller than the sum of its proper divisors (393325835004).

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

189193327620 is a wasteful number, since it uses less digits than its factorization.

189193327620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10842 (or 10829 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 189193327620 in words is "one hundred eighty-nine billion, one hundred ninety-three million, three hundred twenty-seven thousand, six hundred twenty".