2643482021 has 2 divisors, whose sum is σ = 2643482022. Its totient is φ = 2643482020.

The previous prime is 2643481957. The next prime is 2643482033. The reversal of 2643482021 is 1202843462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2142393796 + 501088225 = 46286^2 + 22385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643482021 - 2⁶ = 2643481957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643482081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321741010 + 1321741011.

It is an arithmetic number, because the mean of its divisors is an integer number (1321741011).

Almost surely, 2^2643482021 is an apocalyptic number.

It is an amenable number.

2643482021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643482021 is an equidigital number, since it uses as much as digits as its factorization.

2643482021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2643482021 is about 51414.8035199980. The cubic root of 2643482021 is about 1382.6920113459.

The spelling of 2643482021 in words is "two billion, six hundred forty-three million, four hundred eighty-two thousand, twenty-one".