189191230 has 16 divisors (see below), whose sum is σ = 342330624. Its totient is φ = 75279520.

The previous prime is 189191213. The next prime is 189191231. The reversal of 189191230 is 32191981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189191231) 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, 47617 + ... + 51436.

It is an arithmetic number, because the mean of its divisors is an integer number (21395664).

Almost surely, 2^189191230 is an apocalyptic number.

189191230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189191230 is a deficient number, since it is larger than the sum of its proper divisors (153139394).

189191230 is a wasteful number, since it uses less digits than its factorization.

189191230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99251.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 189191230 is about 13754.6802943580. The cubic root of 189191230 is about 574.0728397651.

The spelling of 189191230 in words is "one hundred eighty-nine million, one hundred ninety-one thousand, two hundred thirty".