2645353613 has 4 divisors (see below), whose sum is σ = 3023261280. Its totient is φ = 2267445948.

The previous prime is 2645353589. The next prime is 2645353621. The reversal of 2645353613 is 3163535462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2645353613 - 2²² = 2641159309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645353213) 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 in 3 ways as a sum of consecutive naturals, for example, 188953823 + ... + 188953836.

It is an arithmetic number, because the mean of its divisors is an integer number (755815320).

Almost surely, 2^2645353613 is an apocalyptic number.

It is an amenable number.

2645353613 is a deficient number, since it is larger than the sum of its proper divisors (377907667).

2645353613 is an equidigital number, since it uses as much as digits as its factorization.

2645353613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377907666.

The product of its digits is 194400, while the sum is 38.

The square root of 2645353613 is about 51433.0012054517. The cubic root of 2645353613 is about 1383.0182508531.

The spelling of 2645353613 in words is "two billion, six hundred forty-five million, three hundred fifty-three thousand, six hundred thirteen".