189306149 has 2 divisors, whose sum is σ = 189306150. Its totient is φ = 189306148.

The previous prime is 189306137. The next prime is 189306193. The reversal of 189306149 is 941603981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177369124 + 11937025 = 13318^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 189306149 - 2¹⁶ = 189240613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189306049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94653074 + 94653075.

It is an arithmetic number, because the mean of its divisors is an integer number (94653075).

Almost surely, 2^189306149 is an apocalyptic number.

It is an amenable number.

189306149 is a deficient number, since it is larger than the sum of its proper divisors (1).

189306149 is an equidigital number, since it uses as much as digits as its factorization.

189306149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 189306149 is about 13758.8571109667. The cubic root of 189306149 is about 574.1890511483.

The spelling of 189306149 in words is "one hundred eighty-nine million, three hundred six thousand, one hundred forty-nine".