2643056489 has 2 divisors, whose sum is σ = 2643056490. Its totient is φ = 2643056488.

The previous prime is 2643056473. The next prime is 2643056551. The reversal of 2643056489 is 9846503462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2391992464 + 251064025 = 48908^2 + 15845^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643056489 - 2⁴ = 2643056473 is a prime.

It is not a weakly prime, because it can be changed into another prime (2643053489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321528244 + 1321528245.

It is an arithmetic number, because the mean of its divisors is an integer number (1321528245).

Almost surely, 2^2643056489 is an apocalyptic number.

It is an amenable number.

2643056489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643056489 is an equidigital number, since it uses as much as digits as its factorization.

2643056489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The square root of 2643056489 is about 51410.6651289399. The cubic root of 2643056489 is about 1382.6178148547.

The spelling of 2643056489 in words is "two billion, six hundred forty-three million, fifty-six thousand, four hundred eighty-nine".