2491824849 has 4 divisors (see below), whose sum is σ = 3322433136. Its totient is φ = 1661216564.

The previous prime is 2491824817. The next prime is 2491824859. The reversal of 2491824849 is 9484281942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2491824849 - 2⁵ = 2491824817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2491824809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415304139 + ... + 415304144.

It is an arithmetic number, because the mean of its divisors is an integer number (830608284).

Almost surely, 2^2491824849 is an apocalyptic number.

It is an amenable number.

2491824849 is a deficient number, since it is larger than the sum of its proper divisors (830608287).

2491824849 is an equidigital number, since it uses as much as digits as its factorization.

2491824849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830608286.

The product of its digits is 1327104, while the sum is 51.

The square root of 2491824849 is about 49918.1815474082. The cubic root of 2491824849 is about 1355.7278078760.

The spelling of 2491824849 in words is "two billion, four hundred ninety-one million, eight hundred twenty-four thousand, eight hundred forty-nine".