489513481 has 2 divisors, whose sum is σ = 489513482. Its totient is φ = 489513480.

The previous prime is 489513443. The next prime is 489513517. The reversal of 489513481 is 184315984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488807881 + 705600 = 22109^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 489513481 - 2¹⁵ = 489480713 is a prime.

It is a super-2 number, since 2×489513481² = 479246896161474722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489513581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244756740 + 244756741.

It is an arithmetic number, because the mean of its divisors is an integer number (244756741).

Almost surely, 2^489513481 is an apocalyptic number.

It is an amenable number.

489513481 is a deficient number, since it is larger than the sum of its proper divisors (1).

489513481 is an equidigital number, since it uses as much as digits as its factorization.

489513481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 489513481 is about 22124.9515479695. The cubic root of 489513481 is about 788.1125056238.

The spelling of 489513481 in words is "four hundred eighty-nine million, five hundred thirteen thousand, four hundred eighty-one".