2490281749 has 2 divisors, whose sum is σ = 2490281750. Its totient is φ = 2490281748.

The previous prime is 2490281723. The next prime is 2490281791. The reversal of 2490281749 is 9471820942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1837836900 + 652444849 = 42870^2 + 25543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2490281749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2490281699 and 2490281708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2490281249) 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, 1245140874 + 1245140875.

It is an arithmetic number, because the mean of its divisors is an integer number (1245140875).

Almost surely, 2^2490281749 is an apocalyptic number.

It is an amenable number.

2490281749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2490281749 is an equidigital number, since it uses as much as digits as its factorization.

2490281749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2490281749 is about 49902.7228615834. The cubic root of 2490281749 is about 1355.4478984796.

The spelling of 2490281749 in words is "two billion, four hundred ninety million, two hundred eighty-one thousand, seven hundred forty-nine".