2649259008 has 352 divisors, whose sum is σ = 8866621440. Its totient is φ = 774144000.

The previous prime is 2649259001. The next prime is 2649259013. The reversal of 2649259008 is 8009529462.

It is a tau number, because it is divible by the number of its divisors (352).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649259001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9427828 + ... + 9428108.

Almost surely, 2^2649259008 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 2649259008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4433310720).

2649259008 is an abundant number, since it is smaller than the sum of its proper divisors (6217362432).

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

2649259008 is a wasteful number, since it uses less digits than its factorization.

2649259008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2649259008 is about 51470.9530512113. The cubic root of 2649259008 is about 1383.6985098459.

The spelling of 2649259008 in words is "two billion, six hundred forty-nine million, two hundred fifty-nine thousand, eight".