189159030000 has 400 divisors, whose sum is σ = 680600263200. Its totient is φ = 50284800000.

The previous prime is 189159029909. The next prime is 189159030013. The reversal of 189159030000 is 30951981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

It is a super-2 number, since 2×189159030000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 105029100 + ... + 105030900.

It is an arithmetic number, because the mean of its divisors is an integer number (1701500658).

Almost surely, 2^189159030000 is an apocalyptic number.

189159030000 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 189159030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340300131600).

189159030000 is an abundant number, since it is smaller than the sum of its proper divisors (491441233200).

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

189159030000 is a wasteful number, since it uses less digits than its factorization.

189159030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2200 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

Adding to 189159030000 its reverse (30951981), we get a palindrome (189189981981).

The spelling of 189159030000 in words is "one hundred eighty-nine billion, one hundred fifty-nine million, thirty thousand".