189986311296 has 224 divisors, whose sum is σ = 571000075920. Its totient is φ = 62935211520.

The previous prime is 189986311283. The next prime is 189986311303. The reversal of 189986311296 is 692113689981.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 15203611 + ... + 15216101.

Almost surely, 2^189986311296 is an apocalyptic number.

189986311296 is a gapful number since it is divisible by the number (16) 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 189986311296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285500037960).

189986311296 is an abundant number, since it is smaller than the sum of its proper divisors (381013764624).

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

189986311296 is an equidigital number, since it uses as much as digits as its factorization.

189986311296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12686 (or 12659 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The spelling of 189986311296 in words is "one hundred eighty-nine billion, nine hundred eighty-six million, three hundred eleven thousand, two hundred ninety-six".