2491835 has 4 divisors (see below), whose sum is σ = 2990208. Its totient is φ = 1993464.

The previous prime is 2491829. The next prime is 2491837. The reversal of 2491835 is 5381942.

2491835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2491835 - 2¹⁰ = 2490811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491837) 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 3 ways as a sum of consecutive naturals, for example, 249179 + ... + 249188.

It is an arithmetic number, because the mean of its divisors is an integer number (747552).

2^2491835 is an apocalyptic number.

2491835 is a deficient number, since it is larger than the sum of its proper divisors (498373).

2491835 is an equidigital number, since it uses as much as digits as its factorization.

2491835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498372.

The product of its digits is 8640, while the sum is 32.

The square root of 2491835 is about 1578.5547187222. The cubic root of 2491835 is about 135.5729648826.

The spelling of 2491835 in words is "two million, four hundred ninety-one thousand, eight hundred thirty-five".