2491248648 has 32 divisors (see below), whose sum is σ = 7117853760. Its totient is φ = 711785280.

The previous prime is 2491248581. The next prime is 2491248649. The reversal of 2491248648 is 8468421942.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2491248597 and 2491248606.

It is not an unprimeable number, because it can be changed into a prime (2491248649) 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 in 7 ways as a sum of consecutive naturals, for example, 7414263 + ... + 7414598.

It is an arithmetic number, because the mean of its divisors is an integer number (222432930).

Almost surely, 2^2491248648 is an apocalyptic number.

2491248648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2491248648 is an abundant number, since it is smaller than the sum of its proper divisors (4626605112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2491248648 is a wasteful number, since it uses less digits than its factorization.

2491248648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14828877 (or 14828873 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 2491248648 is about 49912.4097594977. The cubic root of 2491248648 is about 1355.6233018766.

The spelling of 2491248648 in words is "two billion, four hundred ninety-one million, two hundred forty-eight thousand, six hundred forty-eight".