2644329088 has 16 divisors (see below), whose sum is σ = 5267999610. Its totient is φ = 1322164480.

The previous prime is 2644329059. The next prime is 2644329097. The reversal of 2644329088 is 8809234462.

It can be written as a sum of positive squares in only one way, i.e., 2437199424 + 207129664 = 49368^2 + 14392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 10329283 + ... + 10329538.

Almost surely, 2^2644329088 is an apocalyptic number.

It is an amenable number.

2644329088 is a deficient number, since it is larger than the sum of its proper divisors (2623670522).

2644329088 is an equidigital number, since it uses as much as digits as its factorization.

2644329088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20658835 (or 20658823 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 2644329088 is about 51423.0404390872. The cubic root of 2644329088 is about 1382.8396837070.

The spelling of 2644329088 in words is "two billion, six hundred forty-four million, three hundred twenty-nine thousand, eighty-eight".