2509247867 has 4 divisors (see below), whose sum is σ = 2867711856. Its totient is φ = 2150783880.

The previous prime is 2509247861. The next prime is 2509247869. The reversal of 2509247867 is 7687429052.

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

It is not a de Polignac number, because 2509247867 - 2¹⁰ = 2509246843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2509247861) 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, 179231984 + ... + 179231997.

It is an arithmetic number, because the mean of its divisors is an integer number (716927964).

Almost surely, 2^2509247867 is an apocalyptic number.

2509247867 is a deficient number, since it is larger than the sum of its proper divisors (358463989).

2509247867 is an equidigital number, since it uses as much as digits as its factorization.

2509247867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358463988.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 2509247867 is about 50092.3933047723. The cubic root of 2509247867 is about 1358.8802538877.

The spelling of 2509247867 in words is "two billion, five hundred nine million, two hundred forty-seven thousand, eight hundred sixty-seven".