201189049 has 2 divisors, whose sum is σ = 201189050. Its totient is φ = 201189048.

The previous prime is 201189047. The next prime is 201189059. The reversal of 201189049 is 940981102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113635600 + 87553449 = 10660^2 + 9357^2 .

It is a cyclic number.

It is not a de Polignac number, because 201189049 - 2¹ = 201189047 is a prime.

Together with 201189047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201189047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100594524 + 100594525.

It is an arithmetic number, because the mean of its divisors is an integer number (100594525).

Almost surely, 2^201189049 is an apocalyptic number.

It is an amenable number.

201189049 is a deficient number, since it is larger than the sum of its proper divisors (1).

201189049 is an equidigital number, since it uses as much as digits as its factorization.

201189049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 201189049 is about 14184.1125559550. The cubic root of 201189049 is about 585.9601919399.

The spelling of 201189049 in words is "two hundred one million, one hundred eighty-nine thousand, forty-nine".