2643648783 has 16 divisors (see below), whose sum is σ = 3640089600. Its totient is φ = 1704867840.

The previous prime is 2643648757. The next prime is 2643648793. The reversal of 2643648783 is 3878463462.

2643648783 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2643648783 - 2¹⁰ = 2643647759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643648713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305328 + ... + 313866.

It is an arithmetic number, because the mean of its divisors is an integer number (227505600).

Almost surely, 2^2643648783 is an apocalyptic number.

2643648783 is a deficient number, since it is larger than the sum of its proper divisors (996440817).

2643648783 is a wasteful number, since it uses less digits than its factorization.

2643648783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902.

The product of its digits is 4644864, while the sum is 51.

The square root of 2643648783 is about 51416.4252257973. The cubic root of 2643648783 is about 1382.7210860833.

The spelling of 2643648783 in words is "two billion, six hundred forty-three million, six hundred forty-eight thousand, seven hundred eighty-three".