189343238 has 16 divisors (see below), whose sum is σ = 325184544. Its totient is φ = 80998080.

The previous prime is 189343237. The next prime is 189343249. The reversal of 189343238 is 832343981.

It is a junction number, because it is equal to n+sod(n) for n = 189343195 and 189343204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189343237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4343 + ... + 19938.

It is an arithmetic number, because the mean of its divisors is an integer number (20324034).

Almost surely, 2^189343238 is an apocalyptic number.

189343238 is a deficient number, since it is larger than the sum of its proper divisors (135841306).

189343238 is a wasteful number, since it uses less digits than its factorization.

189343238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24847.

The product of its digits is 124416, while the sum is 41.

The square root of 189343238 is about 13760.2048676609. The cubic root of 189343238 is about 574.2265472134.

The spelling of 189343238 in words is "one hundred eighty-nine million, three hundred forty-three thousand, two hundred thirty-eight".