2603968321 has 2 divisors, whose sum is σ = 2603968322. Its totient is φ = 2603968320.

The previous prime is 2603968291. The next prime is 2603968331. The reversal of 2603968321 is 1238693062.

2603968321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2394732096 + 209236225 = 48936^2 + 14465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2603968321 - 2²¹ = 2601871169 is a prime.

It is not a weakly prime, because it can be changed into another prime (2603968331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1301984160 + 1301984161.

It is an arithmetic number, because the mean of its divisors is an integer number (1301984161).

Almost surely, 2^2603968321 is an apocalyptic number.

It is an amenable number.

2603968321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2603968321 is an equidigital number, since it uses as much as digits as its factorization.

2603968321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 2603968321 is about 51029.0928882731. The cubic root of 2603968321 is about 1375.7680902613.

The spelling of 2603968321 in words is "two billion, six hundred three million, nine hundred sixty-eight thousand, three hundred twenty-one".