490444181 has 2 divisors, whose sum is σ = 490444182. Its totient is φ = 490444180.

The previous prime is 490444133. The next prime is 490444187. The reversal of 490444181 is 181444094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489736900 + 707281 = 22130^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 490444181 - 2¹⁸ = 490182037 is a prime.

It is a super-2 number, since 2×490444181² = 481070989353521522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490444187) 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, 245222090 + 245222091.

It is an arithmetic number, because the mean of its divisors is an integer number (245222091).

Almost surely, 2^490444181 is an apocalyptic number.

It is an amenable number.

490444181 is a deficient number, since it is larger than the sum of its proper divisors (1).

490444181 is an equidigital number, since it uses as much as digits as its factorization.

490444181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 490444181 is about 22145.9743745901. The cubic root of 490444181 is about 788.6116624181.

The spelling of 490444181 in words is "four hundred ninety million, four hundred forty-four thousand, one hundred eighty-one".