2491035648 has 104 divisors (see below), whose sum is σ = 6735361008. Its totient is φ = 818675712.

The previous prime is 2491035607. The next prime is 2491035661. The reversal of 2491035648 is 8465301942.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895636 + ... + 898412.

Almost surely, 2^2491035648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2491035648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3367680504).

2491035648 is an abundant number, since it is smaller than the sum of its proper divisors (4244325360).

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

2491035648 is an equidigital number, since it uses as much as digits as its factorization.

2491035648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2491035648 is about 49910.2759759952. The cubic root of 2491035648 is about 1355.5846658305.

The spelling of 2491035648 in words is "two billion, four hundred ninety-one million, thirty-five thousand, six hundred forty-eight".