189503500 has 24 divisors (see below), whose sum is σ = 413876736. Its totient is φ = 75801200.

The previous prime is 189503497. The next prime is 189503507. The reversal of 189503500 is 5305981.

It is not an unprimeable number, because it can be changed into a prime (189503507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189004 + ... + 190003.

It is an arithmetic number, because the mean of its divisors is an integer number (17244864).

Almost surely, 2^189503500 is an apocalyptic number.

189503500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189503500 is an abundant number, since it is smaller than the sum of its proper divisors (224373236).

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

189503500 is a wasteful number, since it uses less digits than its factorization.

189503500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379026 (or 379014 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 189503500 is about 13766.0270230739. The cubic root of 189503500 is about 574.3885118796.

The spelling of 189503500 in words is "one hundred eighty-nine million, five hundred three thousand, five hundred".