2649638912 has 48 divisors (see below), whose sum is σ = 5410903680. Its totient is φ = 1296584704.

The previous prime is 2649638897. The next prime is 2649638933. The reversal of 2649638912 is 2198369462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82493 + ... + 110019.

It is an arithmetic number, because the mean of its divisors is an integer number (112727160).

Almost surely, 2^2649638912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2649638912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2705451840).

2649638912 is an abundant number, since it is smaller than the sum of its proper divisors (2761264768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2649638912 is an equidigital number, since it uses as much as digits as its factorization.

2649638912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27596 (or 27576 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 2649638912 is about 51474.6433887599. The cubic root of 2649638912 is about 1383.7646475183.

The spelling of 2649638912 in words is "two billion, six hundred forty-nine million, six hundred thirty-eight thousand, nine hundred twelve".