2648971009 has 4 divisors (see below), whose sum is σ = 2713580100. Its totient is φ = 2584361920.

The previous prime is 2648970997. The next prime is 2648971033. The reversal of 2648971009 is 9001798462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37454400 + 2611516609 = 6120^2 + 51103^2 .

It is a cyclic number.

It is not a de Polignac number, because 2648971009 - 2⁵ = 2648970977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2648971009.

It is not an unprimeable number, because it can be changed into a prime (2648971109) 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, 32304484 + ... + 32304565.

It is an arithmetic number, because the mean of its divisors is an integer number (678395025).

Almost surely, 2^2648971009 is an apocalyptic number.

It is an amenable number.

2648971009 is a deficient number, since it is larger than the sum of its proper divisors (64609091).

2648971009 is an equidigital number, since it uses as much as digits as its factorization.

2648971009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64609090.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2648971009 is about 51468.1552904318. The cubic root of 2648971009 is about 1383.6483677461.

The spelling of 2648971009 in words is "two billion, six hundred forty-eight million, nine hundred seventy-one thousand, nine".