189438167 has 2 divisors, whose sum is σ = 189438168. Its totient is φ = 189438166.

The previous prime is 189438149. The next prime is 189438169. The reversal of 189438167 is 761834981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189438167 - 2⁶ = 189438103 is a prime.

Together with 189438169, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189438169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94719083 + 94719084.

It is an arithmetic number, because the mean of its divisors is an integer number (94719084).

Almost surely, 2^189438167 is an apocalyptic number.

189438167 is a deficient number, since it is larger than the sum of its proper divisors (1).

189438167 is an equidigital number, since it uses as much as digits as its factorization.

189438167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The square root of 189438167 is about 13763.6538390066. The cubic root of 189438167 is about 574.3224957937.

The spelling of 189438167 in words is "one hundred eighty-nine million, four hundred thirty-eight thousand, one hundred sixty-seven".