189289901 has 2 divisors, whose sum is σ = 189289902. Its totient is φ = 189289900.

The previous prime is 189289843. The next prime is 189289943. The reversal of 189289901 is 109982981.

189289901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127667401 + 61622500 = 11299^2 + 7850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189289901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189289501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94644950 + 94644951.

It is an arithmetic number, because the mean of its divisors is an integer number (94644951).

Almost surely, 2^189289901 is an apocalyptic number.

It is an amenable number.

189289901 is a deficient number, since it is larger than the sum of its proper divisors (1).

189289901 is an equidigital number, since it uses as much as digits as its factorization.

189289901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 189289901 is about 13758.2666422773. The cubic root of 189289901 is about 574.1726232779.

The spelling of 189289901 in words is "one hundred eighty-nine million, two hundred eighty-nine thousand, nine hundred one".