189685121547530 has 256 divisors, whose sum is σ = 436323474800640. Its totient is φ = 57897483264000.

The previous prime is 189685121547469. The next prime is 189685121547539. The reversal of 189685121547530 is 35745121586981.

189685121547530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (189685121547539) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 767207930 + ... + 767455130.

It is an arithmetic number, because the mean of its divisors is an integer number (1704388573440).

It is a 1-persistent number, because it is pandigital, but 2⋅189685121547530 = 379370243095060 is not.

Almost surely, 2^{189685121547530} is an apocalyptic number.

189685121547530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189685121547530 is an abundant number, since it is smaller than the sum of its proper divisors (246638353253110).

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

189685121547530 is a wasteful number, since it uses less digits than its factorization.

189685121547530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247805.

The product of its (nonzero) digits is 72576000, while the sum is 65.

The spelling of 189685121547530 in words is "one hundred eighty-nine trillion, six hundred eighty-five billion, one hundred twenty-one million, five hundred forty-seven thousand, five hundred thirty".