189981304380 has 144 divisors (see below), whose sum is σ = 693265198080. Its totient is φ = 41138803584.

The previous prime is 189981304327. The next prime is 189981304397. The reversal of 189981304380 is 83403189981.

189981304380 is a `hidden beast` number, since 18 + 99 + 81 + 30 + 438 + 0 = 666.

189981304380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3943924 + ... + 3991803.

Almost surely, 2^189981304380 is an apocalyptic number.

189981304380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189981304380 is an abundant number, since it is smaller than the sum of its proper divisors (503283893700).

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

189981304380 is a wasteful number, since it uses less digits than its factorization.

189981304380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7935768 (or 7935763 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 189981304380 in words is "one hundred eighty-nine billion, nine hundred eighty-one million, three hundred four thousand, three hundred eighty".