2491035649 has 8 divisors (see below), whose sum is σ = 2601020160. Its totient is φ = 2382656976.

The previous prime is 2491035607. The next prime is 2491035661. The reversal of 2491035649 is 9465301942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2491035649 - 2²⁵ = 2457481217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491035149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398289 + ... + 404494.

It is an arithmetic number, because the mean of its divisors is an integer number (325127520).

Almost surely, 2^2491035649 is an apocalyptic number.

2491035649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2491035649 is a deficient number, since it is larger than the sum of its proper divisors (109984511).

2491035649 is a wasteful number, since it uses less digits than its factorization.

2491035649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802919.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2491035649 is about 49910.2759860131. The cubic root of 2491035649 is about 1355.5846660119.

The spelling of 2491035649 in words is "two billion, four hundred ninety-one million, thirty-five thousand, six hundred forty-nine".