189125530 has 64 divisors (see below), whose sum is σ = 388644480. Its totient is φ = 65632000.

The previous prime is 189125471. The next prime is 189125581. The reversal of 189125530 is 35521981.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321897 + ... + 322483.

It is an arithmetic number, because the mean of its divisors is an integer number (6072570).

Almost surely, 2^189125530 is an apocalyptic number.

189125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189125530 is an abundant number, since it is smaller than the sum of its proper divisors (199518950).

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

189125530 is a wasteful number, since it uses less digits than its factorization.

189125530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 189125530 is about 13752.2918090041. The cubic root of 189125530 is about 574.0063797565.

It can be divided in two parts, 18912 and 5530, that added together give a palindrome (24442).

The spelling of 189125530 in words is "one hundred eighty-nine million, one hundred twenty-five thousand, five hundred thirty".