2645743073 has 2 divisors, whose sum is σ = 2645743074. Its totient is φ = 2645743072.

The previous prime is 2645743039. The next prime is 2645743159. The reversal of 2645743073 is 3703475462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2017087744 + 628655329 = 44912^2 + 25073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645743073 - 2¹⁴ = 2645726689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2645743073.

It is not a weakly prime, because it can be changed into another prime (2645743033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322871536 + 1322871537.

It is an arithmetic number, because the mean of its divisors is an integer number (1322871537).

Almost surely, 2^2645743073 is an apocalyptic number.

It is an amenable number.

2645743073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645743073 is an equidigital number, since it uses as much as digits as its factorization.

2645743073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 41.

The square root of 2645743073 is about 51436.7871566644. The cubic root of 2645743073 is about 1383.0861187624.

The spelling of 2645743073 in words is "two billion, six hundred forty-five million, seven hundred forty-three thousand, seventy-three".