189941744180 has 18 divisors (see below), whose sum is σ = 398881755846. Its totient is φ = 75975918048.

The previous prime is 189941744159. The next prime is 189941744219. The reversal of 189941744180 is 81447149981.

It can be written as a sum of positive squares in 3 ways, for example, as 44000935696 + 145940808484 = 209764^2 + 382022^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1900334 + ... + 1997786.

It is an arithmetic number, because the mean of its divisors is an integer number (22160097547).

Almost surely, 2^189941744180 is an apocalyptic number.

189941744180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189941744180 is an abundant number, since it is smaller than the sum of its proper divisors (208940011666).

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

189941744180 is an frugal number, since it uses more digits than its factorization.

189941744180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194915 (or 97460 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 56.

The spelling of 189941744180 in words is "one hundred eighty-nine billion, nine hundred forty-one million, seven hundred forty-four thousand, one hundred eighty".