2491842481 has 2 divisors, whose sum is σ = 2491842482. Its totient is φ = 2491842480.

The previous prime is 2491842467. The next prime is 2491842503. The reversal of 2491842481 is 1842481942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1645032481 + 846810000 = 40559^2 + 29100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491842481 - 2⁵ = 2491842449 is a prime.

It is a super-2 number, since 2×2491842481² = 12418557900232470722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2491842401) 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, 1245921240 + 1245921241.

It is an arithmetic number, because the mean of its divisors is an integer number (1245921241).

Almost surely, 2^2491842481 is an apocalyptic number.

It is an amenable number.

2491842481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491842481 is an equidigital number, since it uses as much as digits as its factorization.

2491842481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 43.

The square root of 2491842481 is about 49918.3581560932. The cubic root of 2491842481 is about 1355.7310055507.

The spelling of 2491842481 in words is "two billion, four hundred ninety-one million, eight hundred forty-two thousand, four hundred eighty-one".