3645251213 has 8 divisors (see below), whose sum is σ = 3844132320. Its totient is φ = 3447072720.

The previous prime is 3645251191. The next prime is 3645251243. The reversal of 3645251213 is 3121525463.

It is a happy number.

3645251213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-3645251213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3645251213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645251243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164978 + ... + 185763.

It is an arithmetic number, because the mean of its divisors is an integer number (480516540).

Almost surely, 2^3645251213 is an apocalyptic number.

It is an amenable number.

3645251213 is a deficient number, since it is larger than the sum of its proper divisors (198881107).

3645251213 is a wasteful number, since it uses less digits than its factorization.

3645251213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351307.

The product of its digits is 21600, while the sum is 32.

The square root of 3645251213 is about 60375.9158357039. The cubic root of 3645251213 is about 1539.0137066032.

Adding to 3645251213 its reverse (3121525463), we get a palindrome (6766776676).

The spelling of 3645251213 in words is "three billion, six hundred forty-five million, two hundred fifty-one thousand, two hundred thirteen".