491308459529 has 2 divisors, whose sum is σ = 491308459530. Its totient is φ = 491308459528.

The previous prime is 491308459517. The next prime is 491308459541. The reversal of 491308459529 is 925954803194.

It is a balanced prime because it is at equal distance from previous prime (491308459517) and next prime (491308459541).

It can be written as a sum of positive squares in only one way, i.e., 355698924025 + 135609535504 = 596405^2 + 368252^2 .

It is a cyclic number.

It is not a de Polignac number, because 491308459529 - 2¹⁶ = 491308393993 is a prime.

It is not a weakly prime, because it can be changed into another prime (491308459129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245654229764 + 245654229765.

It is an arithmetic number, because the mean of its divisors is an integer number (245654229765).

Almost surely, 2^491308459529 is an apocalyptic number.

It is an amenable number.

491308459529 is a deficient number, since it is larger than the sum of its proper divisors (1).

491308459529 is an equidigital number, since it uses as much as digits as its factorization.

491308459529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The spelling of 491308459529 in words is "four hundred ninety-one billion, three hundred eight million, four hundred fifty-nine thousand, five hundred twenty-nine".