2645213648 has 60 divisors (see below), whose sum is σ = 6503860512. Its totient is φ = 1030599360.

The previous prime is 2645213639. The next prime is 2645213689. The reversal of 2645213648 is 8463125462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144740 + ... + 161987.

Almost surely, 2^2645213648 is an apocalyptic number.

2645213648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2645213648 is an abundant number, since it is smaller than the sum of its proper divisors (3858646864).

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

2645213648 is a wasteful number, since it uses less digits than its factorization.

2645213648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306760 (or 306747 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 2645213648 is about 51431.6405338193. The cubic root of 2645213648 is about 1382.9938587060.

The spelling of 2645213648 in words is "two billion, six hundred forty-five million, two hundred thirteen thousand, six hundred forty-eight".