2645320613 has 8 divisors (see below), whose sum is σ = 2940704256. Its totient is φ = 2363065200.

The previous prime is 2645320591. The next prime is 2645320633. The reversal of 2645320613 is 3160235462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2645320613 - 2¹⁶ = 2645255077 is a prime.

It is a super-2 number, since 2×2645320613² = 13995442291125391538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2645320613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645320633) 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 7 ways as a sum of consecutive naturals, for example, 3281633 + ... + 3282438.

It is an arithmetic number, because the mean of its divisors is an integer number (367588032).

Almost surely, 2^2645320613 is an apocalyptic number.

It is an amenable number.

2645320613 is a deficient number, since it is larger than the sum of its proper divisors (295383643).

2645320613 is a wasteful number, since it uses less digits than its factorization.

2645320613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564115.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2645320613 is about 51432.6803987504. The cubic root of 2645320613 is about 1383.0124999153.

The spelling of 2645320613 in words is "two billion, six hundred forty-five million, three hundred twenty thousand, six hundred thirteen".