2643453647 has 2 divisors, whose sum is σ = 2643453648. Its totient is φ = 2643453646.

The previous prime is 2643453629. The next prime is 2643453653. The reversal of 2643453647 is 7463543462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2643453647 - 2⁶ = 2643453583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2643453598 and 2643453607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643453677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321726823 + 1321726824.

It is an arithmetic number, because the mean of its divisors is an integer number (1321726824).

Almost surely, 2^2643453647 is an apocalyptic number.

2643453647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643453647 is an equidigital number, since it uses as much as digits as its factorization.

2643453647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 44.

The square root of 2643453647 is about 51414.5275870546. The cubic root of 2643453647 is about 1382.6870642542.

The spelling of 2643453647 in words is "two billion, six hundred forty-three million, four hundred fifty-three thousand, six hundred forty-seven".