489028181 has 2 divisors, whose sum is σ = 489028182. Its totient is φ = 489028180.

The previous prime is 489028157. The next prime is 489028201. The reversal of 489028181 is 181820984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469588900 + 19439281 = 21670^2 + 4409^2 .

It is a cyclic number.

It is not a de Polignac number, because 489028181 - 2²⁶ = 421919317 is a prime.

It is a super-2 number, since 2×489028181² = 478297123624337522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489028151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244514090 + 244514091.

It is an arithmetic number, because the mean of its divisors is an integer number (244514091).

Almost surely, 2^489028181 is an apocalyptic number.

It is an amenable number.

489028181 is a deficient number, since it is larger than the sum of its proper divisors (1).

489028181 is an equidigital number, since it uses as much as digits as its factorization.

489028181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 489028181 is about 22113.9815727517. The cubic root of 489028181 is about 787.8519765635.

The spelling of 489028181 in words is "four hundred eighty-nine million, twenty-eight thousand, one hundred eighty-one".