189208930 has 16 divisors (see below), whose sum is σ = 340775424. Its totient is φ = 75639280.

The previous prime is 189208913. The next prime is 189208961. The reversal of 189208930 is 39802981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16629 + ... + 25591.

It is an arithmetic number, because the mean of its divisors is an integer number (21298464).

Almost surely, 2^189208930 is an apocalyptic number.

189208930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189208930 is a deficient number, since it is larger than the sum of its proper divisors (151566494).

189208930 is a wasteful number, since it uses less digits than its factorization.

189208930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 189208930 is about 13755.3236966638. The cubic root of 189208930 is about 574.0907418852.

The spelling of 189208930 in words is "one hundred eighty-nine million, two hundred eight thousand, nine hundred thirty".