3265645613 has 4 divisors (see below), whose sum is σ = 3345295548. Its totient is φ = 3185995680.

The previous prime is 3265645609. The next prime is 3265645619. The reversal of 3265645613 is 3165465623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3165465623 = 29 ⋅109153987.

It can be written as a sum of positive squares in 2 ways, for example, as 439447369 + 2826198244 = 20963^2 + 53162^2 .

It is a cyclic number.

It is not a de Polignac number, because 3265645613 - 2² = 3265645609 is a prime.

It is a super-2 number, since 2×3265645613² = 21328882539412291538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 79649893 = 3265645613 / (3 + 2 + 6 + 5 + 6 + 4 + 5 + 6 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3265645619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39824906 + ... + 39824987.

It is an arithmetic number, because the mean of its divisors is an integer number (836323887).

Almost surely, 2^3265645613 is an apocalyptic number.

It is an amenable number.

3265645613 is a deficient number, since it is larger than the sum of its proper divisors (79649935).

3265645613 is an equidigital number, since it uses as much as digits as its factorization.

3265645613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79649934.

The product of its digits is 388800, while the sum is 41.

The square root of 3265645613 is about 57145.8276079715. The cubic root of 3265645613 is about 1483.6211566826.

The spelling of 3265645613 in words is "three billion, two hundred sixty-five million, six hundred forty-five thousand, six hundred thirteen".