491203520741 has 2 divisors, whose sum is σ = 491203520742. Its totient is φ = 491203520740.

The previous prime is 491203520669. The next prime is 491203520779. The reversal of 491203520741 is 147025302194.

It is an a-pointer prime, because the next prime (491203520779) can be obtained adding 491203520741 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331003458241 + 160200062500 = 575329^2 + 400250^2 .

It is a cyclic number.

It is not a de Polignac number, because 491203520741 - 2¹⁰ = 491203519717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491203520695 and 491203520704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491203520641) 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, 245601760370 + 245601760371.

It is an arithmetic number, because the mean of its divisors is an integer number (245601760371).

Almost surely, 2^491203520741 is an apocalyptic number.

It is an amenable number.

491203520741 is a deficient number, since it is larger than the sum of its proper divisors (1).

491203520741 is an equidigital number, since it uses as much as digits as its factorization.

491203520741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 491203520741 in words is "four hundred ninety-one billion, two hundred three million, five hundred twenty thousand, seven hundred forty-one".