201189061 has 2 divisors, whose sum is σ = 201189062. Its totient is φ = 201189060.

The previous prime is 201189059. The next prime is 201189083. The reversal of 201189061 is 160981102.

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., 101808100 + 99380961 = 10090^2 + 9969^2 .

It is a cyclic number.

It is not a de Polignac number, because 201189061 - 2¹ = 201189059 is a prime.

Together with 201189059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201189361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100594530 + 100594531.

It is an arithmetic number, because the mean of its divisors is an integer number (100594531).

Almost surely, 2^201189061 is an apocalyptic number.

It is an amenable number.

201189061 is a deficient number, since it is larger than the sum of its proper divisors (1).

201189061 is an equidigital number, since it uses as much as digits as its factorization.

201189061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 201189061 is about 14184.1129789635. The cubic root of 201189061 is about 585.9602035899.

The spelling of 201189061 in words is "two hundred one million, one hundred eighty-nine thousand, sixty-one".