485191789 has 2 divisors, whose sum is σ = 485191790. Its totient is φ = 485191788.

The previous prime is 485191753. The next prime is 485191813. The reversal of 485191789 is 987191584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484440100 + 751689 = 22010^2 + 867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485191789 is a prime.

It is a super-3 number, since 3×485191789³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485194789) 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, 242595894 + 242595895.

It is an arithmetic number, because the mean of its divisors is an integer number (242595895).

Almost surely, 2^485191789 is an apocalyptic number.

It is an amenable number.

485191789 is a deficient number, since it is larger than the sum of its proper divisors (1).

485191789 is an equidigital number, since it uses as much as digits as its factorization.

485191789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 52.

The square root of 485191789 is about 22027.0694600984. The cubic root of 485191789 is about 785.7863509296.

The spelling of 485191789 in words is "four hundred eighty-five million, one hundred ninety-one thousand, seven hundred eighty-nine".