489501283781 has 2 divisors, whose sum is σ = 489501283782. Its totient is φ = 489501283780.

The previous prime is 489501283769. The next prime is 489501283849. The reversal of 489501283781 is 187382105984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340343892100 + 149157391681 = 583390^2 + 386209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489501283781 is a prime.

It is a super-2 number, since 2×489501283781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489501213781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244750641890 + 244750641891.

It is an arithmetic number, because the mean of its divisors is an integer number (244750641891).

Almost surely, 2^489501283781 is an apocalyptic number.

It is an amenable number.

489501283781 is a deficient number, since it is larger than the sum of its proper divisors (1).

489501283781 is an equidigital number, since it uses as much as digits as its factorization.

489501283781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 489501283781 in words is "four hundred eighty-nine billion, five hundred one million, two hundred eighty-three thousand, seven hundred eighty-one".