2491740556 has 6 divisors (see below), whose sum is σ = 4360545980. Its totient is φ = 1245870276.

The previous prime is 2491740553. The next prime is 2491740557. The reversal of 2491740556 is 6550471942.

It is not an unprimeable number, because it can be changed into a prime (2491740553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311467566 + ... + 311467573.

Almost surely, 2^2491740556 is an apocalyptic number.

It is an amenable number.

2491740556 is a deficient number, since it is larger than the sum of its proper divisors (1868805424).

2491740556 is a wasteful number, since it uses less digits than its factorization.

2491740556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622935143 (or 622935141 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 2491740556 is about 49917.3372286623. The cubic root of 2491740556 is about 1355.7125205986.

The spelling of 2491740556 in words is "two billion, four hundred ninety-one million, seven hundred forty thousand, five hundred fifty-six".