2645843113 has 2 divisors, whose sum is σ = 2645843114. Its totient is φ = 2645843112.

The previous prime is 2645843107. The next prime is 2645843131. The reversal of 2645843113 is 3113485462.

Together with next prime (2645843131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1539149824 + 1106693289 = 39232^2 + 33267^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645843113 - 2⁹ = 2645842601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2645843173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322921556 + 1322921557.

It is an arithmetic number, because the mean of its divisors is an integer number (1322921557).

Almost surely, 2^2645843113 is an apocalyptic number.

It is an amenable number.

2645843113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645843113 is an equidigital number, since it uses as much as digits as its factorization.

2645843113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 2645843113 is about 51437.7596032331. The cubic root of 2645843113 is about 1383.1035508143.

The spelling of 2645843113 in words is "two billion, six hundred forty-five million, eight hundred forty-three thousand, one hundred thirteen".