189230686 has 4 divisors (see below), whose sum is σ = 283846032. Its totient is φ = 94615342.

The previous prime is 189230663. The next prime is 189230693. The reversal of 189230686 is 686032981.

189230686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686032981 = 19 ⋅36106999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47307670 + ... + 47307673.

It is an arithmetic number, because the mean of its divisors is an integer number (70961508).

Almost surely, 2^189230686 is an apocalyptic number.

189230686 is a deficient number, since it is larger than the sum of its proper divisors (94615346).

189230686 is an equidigital number, since it uses as much as digits as its factorization.

189230686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94615345.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 189230686 is about 13756.1144950164. The cubic root of 189230686 is about 574.1127447923.

The spelling of 189230686 in words is "one hundred eighty-nine million, two hundred thirty thousand, six hundred eighty-six".