1189171 has 2 divisors, whose sum is σ = 1189172. Its totient is φ = 1189170.

The previous prime is 1189163. The next prime is 1189189. The reversal of 1189171 is 1719811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1189171 - 2³ = 1189163 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1189121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594585 + 594586.

It is an arithmetic number, because the mean of its divisors is an integer number (594586).

2^1189171 is an apocalyptic number.

1189171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189171 is an equidigital number, since it uses as much as digits as its factorization.

1189171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 28.

The square root of 1189171 is about 1090.4911737378. The cubic root of 1189171 is about 105.9452369314.

The spelling of 1189171 in words is "one million, one hundred eighty-nine thousand, one hundred seventy-one".