905454635909 has 2 divisors, whose sum is σ = 905454635910. Its totient is φ = 905454635908.

The previous prime is 905454635887. The next prime is 905454635927. The reversal of 905454635909 is 909536454509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901022405284 + 4432230625 = 949222^2 + 66575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-905454635909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (905454035909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452727317954 + 452727317955.

It is an arithmetic number, because the mean of its divisors is an integer number (452727317955).

Almost surely, 2^905454635909 is an apocalyptic number.

It is an amenable number.

905454635909 is a deficient number, since it is larger than the sum of its proper divisors (1).

905454635909 is an equidigital number, since it uses as much as digits as its factorization.

905454635909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244000, while the sum is 59.

The spelling of 905454635909 in words is "nine hundred five billion, four hundred fifty-four million, six hundred thirty-five thousand, nine hundred nine".