2491454149 has 2 divisors, whose sum is σ = 2491454150. Its totient is φ = 2491454148.

The previous prime is 2491454111. The next prime is 2491454153. The reversal of 2491454149 is 9414541942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1442860225 + 1048593924 = 37985^2 + 32382^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491454149 - 2¹¹ = 2491452101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491457149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245727074 + 1245727075.

It is an arithmetic number, because the mean of its divisors is an integer number (1245727075).

Almost surely, 2^2491454149 is an apocalyptic number.

It is an amenable number.

2491454149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491454149 is an equidigital number, since it uses as much as digits as its factorization.

2491454149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 2491454149 is about 49914.4683333400. The cubic root of 2491454149 is about 1355.6605755927.

The spelling of 2491454149 in words is "two billion, four hundred ninety-one million, four hundred fifty-four thousand, one hundred forty-nine".