189000197 has 2 divisors, whose sum is σ = 189000198. Its totient is φ = 189000196.

The previous prime is 189000167. The next prime is 189000241. The reversal of 189000197 is 791000981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185123236 + 3876961 = 13606^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 189000197 - 2¹⁶ = 188934661 is a prime.

It is a super-3 number, since 3×189000197³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189000167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94500098 + 94500099.

It is an arithmetic number, because the mean of its divisors is an integer number (94500099).

Almost surely, 2^189000197 is an apocalyptic number.

It is an amenable number.

189000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

189000197 is an equidigital number, since it uses as much as digits as its factorization.

189000197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 189000197 is about 13747.7342496864. The cubic root of 189000197 is about 573.8795542218.

The spelling of 189000197 in words is "one hundred eighty-nine million, one hundred ninety-seven", and thus it is an aban number.