189118159 has 2 divisors, whose sum is σ = 189118160. Its totient is φ = 189118158.

The previous prime is 189118141. The next prime is 189118169. The reversal of 189118159 is 951811981.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189118159 - 2¹³ = 189109967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189118129) by changing a digit.

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, 94559079 + 94559080.

It is an arithmetic number, because the mean of its divisors is an integer number (94559080).

Almost surely, 2^189118159 is an apocalyptic number.

189118159 is a deficient number, since it is larger than the sum of its proper divisors (1).

189118159 is an equidigital number, since it uses as much as digits as its factorization.

189118159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 43.

The square root of 189118159 is about 13752.0238146972. The cubic root of 189118159 is about 573.9989225295.

The spelling of 189118159 in words is "one hundred eighty-nine million, one hundred eighteen thousand, one hundred fifty-nine".