2645743169 has 2 divisors, whose sum is σ = 2645743170. Its totient is φ = 2645743168.

The previous prime is 2645743159. The next prime is 2645743183. The reversal of 2645743169 is 9613475462.

2645743169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1776201025 + 869542144 = 42145^2 + 29488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645743169 - 2²⁴ = 2628965953 is a prime.

It is a super-2 number, since 2×2645743169² = 13999913832620325122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2645743159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322871584 + 1322871585.

It is an arithmetic number, because the mean of its divisors is an integer number (1322871585).

Almost surely, 2^2645743169 is an apocalyptic number.

It is an amenable number.

2645743169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645743169 is an equidigital number, since it uses as much as digits as its factorization.

2645743169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 47.

The square root of 2645743169 is about 51436.7880898487. The cubic root of 2645743169 is about 1383.0861354907.

The spelling of 2645743169 in words is "two billion, six hundred forty-five million, seven hundred forty-three thousand, one hundred sixty-nine".