2648203721 has 2 divisors, whose sum is σ = 2648203722. Its totient is φ = 2648203720.

The previous prime is 2648203709. The next prime is 2648203751. The reversal of 2648203721 is 1273028462.

2648203721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2382513721 + 265690000 = 48811^2 + 16300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2648203721 - 2¹⁴ = 2648187337 is a prime.

It is not a weakly prime, because it can be changed into another prime (2648203751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324101860 + 1324101861.

It is an arithmetic number, because the mean of its divisors is an integer number (1324101861).

Almost surely, 2^2648203721 is an apocalyptic number.

It is an amenable number.

2648203721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2648203721 is an equidigital number, since it uses as much as digits as its factorization.

2648203721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 2648203721 is about 51460.7007433828. The cubic root of 2648203721 is about 1383.5147612367.

The spelling of 2648203721 in words is "two billion, six hundred forty-eight million, two hundred three thousand, seven hundred twenty-one".