2490281249 has 2 divisors, whose sum is σ = 2490281250. Its totient is φ = 2490281248.

The previous prime is 2490281239. The next prime is 2490281251. The reversal of 2490281249 is 9421820942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2477550625 + 12730624 = 49775^2 + 3568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2490281249 - 2⁸ = 2490280993 is a prime.

Together with 2490281251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2490281239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245140624 + 1245140625.

It is an arithmetic number, because the mean of its divisors is an integer number (1245140625).

Almost surely, 2^2490281249 is an apocalyptic number.

It is an amenable number.

2490281249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2490281249 is an equidigital number, since it uses as much as digits as its factorization.

2490281249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2490281249 is about 49902.7178518365. The cubic root of 2490281249 is about 1355.4478077638.

The spelling of 2490281249 in words is "two billion, four hundred ninety million, two hundred eighty-one thousand, two hundred forty-nine".