189449844480 has 432 divisors, whose sum is σ = 736602624576. Its totient is φ = 44605440000.

The previous prime is 189449844469. The next prime is 189449844539. The reversal of 189449844480 is 84448944981.

189449844480 is a `hidden beast` number, since 18 + 94 + 4 + 98 + 4 + 448 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3416980 + ... + 3471980.

It is an arithmetic number, because the mean of its divisors is an integer number (1705098668).

Almost surely, 2^189449844480 is an apocalyptic number.

189449844480 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 189449844480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368301312288).

189449844480 is an abundant number, since it is smaller than the sum of its proper divisors (547152780096).

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

189449844480 is a wasteful number, since it uses less digits than its factorization.

189449844480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55064 (or 55047 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 63.

The spelling of 189449844480 in words is "one hundred eighty-nine billion, four hundred forty-nine million, eight hundred forty-four thousand, four hundred eighty".