189983259648 has 352 divisors, whose sum is σ = 692487326720. Its totient is φ = 50104811520.

The previous prime is 189983259643. The next prime is 189983259703. The reversal of 189983259648 is 846952389981.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189983259643) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2478213 + ... + 2553723.

Almost surely, 2^189983259648 is an apocalyptic number.

189983259648 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 189983259648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346243663360).

189983259648 is an abundant number, since it is smaller than the sum of its proper divisors (502504067072).

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

189983259648 is a wasteful number, since it uses less digits than its factorization.

189983259648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75560 (or 75536 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 72.

The spelling of 189983259648 in words is "one hundred eighty-nine billion, nine hundred eighty-three million, two hundred fifty-nine thousand, six hundred forty-eight".