189543900000 has 1152 divisors, whose sum is σ = 785811704832. Its totient is φ = 38937600000.

The previous prime is 189543899957. The next prime is 189543900001. The reversal of 189543900000 is 9345981.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189543900001) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1446899935 + ... + 1446900065.

It is an arithmetic number, because the mean of its divisors is an integer number (682128216).

Almost surely, 2^189543900000 is an apocalyptic number.

189543900000 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 189543900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392905852416).

189543900000 is an abundant number, since it is smaller than the sum of its proper divisors (596267804832).

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

189543900000 is a wasteful number, since it uses less digits than its factorization.

189543900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 189543900000 in words is "one hundred eighty-nine billion, five hundred forty-three million, nine hundred thousand".