485249019509 has 2 divisors, whose sum is σ = 485249019510. Its totient is φ = 485249019508.

The previous prime is 485249019443. The next prime is 485249019523. The reversal of 485249019509 is 905910942584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318067800625 + 167181218884 = 563975^2 + 408878^2 .

It is a cyclic number.

It is not a de Polignac number, because 485249019509 - 2¹² = 485249015413 is a prime.

It is a super-2 number, since 2×485249019509² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485249010509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242624509754 + 242624509755.

It is an arithmetic number, because the mean of its divisors is an integer number (242624509755).

Almost surely, 2^485249019509 is an apocalyptic number.

It is an amenable number.

485249019509 is a deficient number, since it is larger than the sum of its proper divisors (1).

485249019509 is an equidigital number, since it uses as much as digits as its factorization.

485249019509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 485249019509 in words is "four hundred eighty-five billion, two hundred forty-nine million, nineteen thousand, five hundred nine".