189513648 has 80 divisors (see below), whose sum is σ = 547033440. Its totient is φ = 62816256.

The previous prime is 189513617. The next prime is 189513661. The reversal of 189513648 is 846315981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82240 + ... + 84512.

It is an arithmetic number, because the mean of its divisors is an integer number (6837918).

Almost surely, 2^189513648 is an apocalyptic number.

189513648 is a gapful number since it is divisible by the number (18) 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 189513648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273516720).

189513648 is an abundant number, since it is smaller than the sum of its proper divisors (357519792).

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

189513648 is a wasteful number, since it uses less digits than its factorization.

189513648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483 (or 2471 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 189513648 is about 13766.3956066939. The cubic root of 189513648 is about 574.3987646200.

The spelling of 189513648 in words is "one hundred eighty-nine million, five hundred thirteen thousand, six hundred forty-eight".