2108640648 has 32 divisors (see below), whose sum is σ = 5360954400. Its totient is φ = 690966528.

The previous prime is 2108640637. The next prime is 2108640661. The reversal of 2108640648 is 8460468012.

It is a super-3 number, since 3×2108640648³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743161 + ... + 745992.

It is an arithmetic number, because the mean of its divisors is an integer number (167529825).

Almost surely, 2^2108640648 is an apocalyptic number.

It is an amenable number.

2108640648 is an abundant number, since it is smaller than the sum of its proper divisors (3252313752).

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

2108640648 is a wasteful number, since it uses less digits than its factorization.

2108640648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489221 (or 1489217 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 2108640648 is about 45919.9373692953. The cubic root of 2108640648 is about 1282.3331161550. Note that the first 3 decimals are identical.

The spelling of 2108640648 in words is "two billion, one hundred eight million, six hundred forty thousand, six hundred forty-eight".