2491649448 has 32 divisors (see below), whose sum is σ = 6373989600. Its totient is φ = 811234368.

The previous prime is 2491649431. The next prime is 2491649471. The reversal of 2491649448 is 8449461942.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2491649448.

It is an unprimeable number.

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, 1206163 + ... + 1208226.

It is an arithmetic number, because the mean of its divisors is an integer number (199187175).

Almost surely, 2^2491649448 is an apocalyptic number.

It is an amenable number.

2491649448 is an abundant number, since it is smaller than the sum of its proper divisors (3882340152).

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

2491649448 is a wasteful number, since it uses less digits than its factorization.

2491649448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414441 (or 2414437 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 2491649448 is about 49916.4246315779. The cubic root of 2491649448 is about 1355.6959969733.

The spelling of 2491649448 in words is "two billion, four hundred ninety-one million, six hundred forty-nine thousand, four hundred forty-eight".