905036189 has 2 divisors, whose sum is σ = 905036190. Its totient is φ = 905036188.

The previous prime is 905036161. The next prime is 905036203. The reversal of 905036189 is 981630509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661364089 + 243672100 = 25717^2 + 15610^2 .

It is a cyclic number.

It is not a de Polignac number, because 905036189 - 2¹⁶ = 904970653 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (905036129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452518094 + 452518095.

It is an arithmetic number, because the mean of its divisors is an integer number (452518095).

Almost surely, 2^905036189 is an apocalyptic number.

It is an amenable number.

905036189 is a deficient number, since it is larger than the sum of its proper divisors (1).

905036189 is an equidigital number, since it uses as much as digits as its factorization.

905036189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 905036189 is about 30083.8193885019. The cubic root of 905036189 is about 967.2869199820.

The spelling of 905036189 in words is "nine hundred five million, thirty-six thousand, one hundred eighty-nine".