189012530 has 16 divisors (see below), whose sum is σ = 388825920. Its totient is φ = 64804272.

The previous prime is 189012529. The next prime is 189012533. The reversal of 189012530 is 35210981.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189012493 and 189012502.

It is not an unprimeable number, because it can be changed into a prime (189012533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350020 + ... + 1350159.

It is an arithmetic number, because the mean of its divisors is an integer number (24301620).

Almost surely, 2^189012530 is an apocalyptic number.

189012530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189012530 is an abundant number, since it is smaller than the sum of its proper divisors (199813390).

189012530 is a wasteful number, since it uses less digits than its factorization.

189012530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700193.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 189012530 is about 13748.1827890089. The cubic root of 189012530 is about 573.8920365767.

The spelling of 189012530 in words is "one hundred eighty-nine million, twelve thousand, five hundred thirty".