3645230513 has 4 divisors (see below), whose sum is σ = 3645651300. Its totient is φ = 3644809728.

The previous prime is 3645230507. The next prime is 3645230521. The reversal of 3645230513 is 3150325463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13601344 + 3631629169 = 3688^2 + 60263^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645230513 - 2²² = 3641036209 is a prime.

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 3645230513.

It is not an unprimeable number, because it can be changed into a prime (3645230543) 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, 197120 + ... + 214817.

It is an arithmetic number, because the mean of its divisors is an integer number (911412825).

Almost surely, 2^3645230513 is an apocalyptic number.

It is an amenable number.

3645230513 is a deficient number, since it is larger than the sum of its proper divisors (420787).

3645230513 is an equidigital number, since it uses as much as digits as its factorization.

3645230513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420786.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 3645230513 is about 60375.7444094895. The cubic root of 3645230513 is about 1539.0107934392.

Adding to 3645230513 its reverse (3150325463), we get a palindrome (6795555976).

The spelling of 3645230513 in words is "three billion, six hundred forty-five million, two hundred thirty thousand, five hundred thirteen".