189703530 has 48 divisors (see below), whose sum is σ = 504709920. Its totient is φ = 49410144.

The previous prime is 189703519. The next prime is 189703531. The reversal of 189703530 is 35307981.

It is not an unprimeable number, because it can be changed into a prime (189703531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20640 + ... + 28379.

It is an arithmetic number, because the mean of its divisors is an integer number (10514790).

Almost surely, 2^189703530 is an apocalyptic number.

189703530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189703530 is an abundant number, since it is smaller than the sum of its proper divisors (315006390).

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

189703530 is a wasteful number, since it uses less digits than its factorization.

189703530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49075 (or 49072 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 189703530 is about 13773.2904565322. The cubic root of 189703530 is about 574.5905389873.

It can be divided in two parts, 18970 and 3530, that added together give a square (22500 = 150²).

The spelling of 189703530 in words is "one hundred eighty-nine million, seven hundred three thousand, five hundred thirty".