189118141 has 2 divisors, whose sum is σ = 189118142. Its totient is φ = 189118140.

The previous prime is 189118133. The next prime is 189118159. The reversal of 189118141 is 141811981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180794916 + 8323225 = 13446^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 189118141 - 2³ = 189118133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189118097 and 189118106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189116141) 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, 94559070 + 94559071.

It is an arithmetic number, because the mean of its divisors is an integer number (94559071).

Almost surely, 2^189118141 is an apocalyptic number.

It is an amenable number.

189118141 is a deficient number, since it is larger than the sum of its proper divisors (1).

189118141 is an equidigital number, since it uses as much as digits as its factorization.

189118141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 34.

The square root of 189118141 is about 13752.0231602481. The cubic root of 189118141 is about 573.9989043187.

The spelling of 189118141 in words is "one hundred eighty-nine million, one hundred eighteen thousand, one hundred forty-one".