2490660281 has 2 divisors, whose sum is σ = 2490660282. Its totient is φ = 2490660280.

The previous prime is 2490660269. The next prime is 2490660299. The reversal of 2490660281 is 1820660942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1314787600 + 1175872681 = 36260^2 + 34291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2490660281 is a prime.

It is a super-2 number, since 2×2490660281² = 12406777270701997922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2490660481) 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, 1245330140 + 1245330141.

It is an arithmetic number, because the mean of its divisors is an integer number (1245330141).

Almost surely, 2^2490660281 is an apocalyptic number.

It is an amenable number.

2490660281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2490660281 is an equidigital number, since it uses as much as digits as its factorization.

2490660281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 2490660281 is about 49906.5154163262. The cubic root of 2490660281 is about 1355.5165726915.

The spelling of 2490660281 in words is "two billion, four hundred ninety million, six hundred sixty thousand, two hundred eighty-one".