189915011328 has 576 divisors, whose sum is σ = 645037998080. Its totient is φ = 48372940800.

The previous prime is 189915011263. The next prime is 189915011371. The reversal of 189915011328 is 823110519981.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117158358 + ... + 117159978.

Almost surely, 2^189915011328 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 189915011328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322518999040).

189915011328 is an abundant number, since it is smaller than the sum of its proper divisors (455122986752).

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

189915011328 is a wasteful number, since it uses less digits than its factorization.

189915011328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 48.

The spelling of 189915011328 in words is "one hundred eighty-nine billion, nine hundred fifteen million, eleven thousand, three hundred twenty-eight".