189306049 has 2 divisors, whose sum is σ = 189306050. Its totient is φ = 189306048.

The previous prime is 189306037. The next prime is 189306107. The reversal of 189306049 is 940603981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 92775424 = 9825^2 + 9632^2 .

It is an emirp because it is prime and its reverse (940603981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189306049 - 2¹¹ = 189304001 is a prime.

It is not a weakly prime, because it can be changed into another prime (189306149) 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, 94653024 + 94653025.

It is an arithmetic number, because the mean of its divisors is an integer number (94653025).

Almost surely, 2^189306049 is an apocalyptic number.

It is an amenable number.

189306049 is a deficient number, since it is larger than the sum of its proper divisors (1).

189306049 is an equidigital number, since it uses as much as digits as its factorization.

189306049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 189306049 is about 13758.8534769435. The cubic root of 189306049 is about 574.1889500441.

The spelling of 189306049 in words is "one hundred eighty-nine million, three hundred six thousand, forty-nine".