189012193 has 2 divisors, whose sum is σ = 189012194. Its totient is φ = 189012192.

The previous prime is 189012191. The next prime is 189012211. The reversal of 189012193 is 391210981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182601169 + 6411024 = 13513^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 189012193 - 2¹ = 189012191 is a prime.

Together with 189012191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (189012191) 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 as a sum of consecutive naturals, namely, 94506096 + 94506097.

It is an arithmetic number, because the mean of its divisors is an integer number (94506097).

Almost surely, 2^189012193 is an apocalyptic number.

It is an amenable number.

189012193 is a deficient number, since it is larger than the sum of its proper divisors (1).

189012193 is an equidigital number, since it uses as much as digits as its factorization.

189012193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 189012193 is about 13748.1705328382. The cubic root of 189012193 is about 573.8916955028.

The spelling of 189012193 in words is "one hundred eighty-nine million, twelve thousand, one hundred ninety-three".