2540772849 has 4 divisors (see below), whose sum is σ = 3387697136. Its totient is φ = 1693848564.

The previous prime is 2540772827. The next prime is 2540772877. The reversal of 2540772849 is 9482770452.

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 not a de Polignac number, because 2540772849 - 2²³ = 2532384241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2540772798 and 2540772807.

It is not an unprimeable number, because it can be changed into a prime (2540772889) 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, 423462139 + ... + 423462144.

It is an arithmetic number, because the mean of its divisors is an integer number (846924284).

Almost surely, 2^2540772849 is an apocalyptic number.

It is an amenable number.

2540772849 is a deficient number, since it is larger than the sum of its proper divisors (846924287).

2540772849 is an equidigital number, since it uses as much as digits as its factorization.

2540772849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846924286.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 2540772849 is about 50406.0794845225. The cubic root of 2540772849 is about 1364.5473592103.

The spelling of 2540772849 in words is "two billion, five hundred forty million, seven hundred seventy-two thousand, eight hundred forty-nine".