3645612436 has 12 divisors (see below), whose sum is σ = 6383827828. Its totient is φ = 1821661632.

The previous prime is 3645612409. The next prime is 3645612449. The reversal of 3645612436 is 6342165463.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2033108100 + 1612504336 = 45090^2 + 40156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278961 + ... + 291736.

Almost surely, 2^3645612436 is an apocalyptic number.

It is an amenable number.

3645612436 is a deficient number, since it is larger than the sum of its proper divisors (2738215392).

3645612436 is a wasteful number, since it uses less digits than its factorization.

3645612436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572298 (or 572296 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 3645612436 is about 60378.9072110451. The cubic root of 3645612436 is about 1539.0645406659.

Adding to 3645612436 its reverse (6342165463), we get a palindrome (9987777899).

The spelling of 3645612436 in words is "three billion, six hundred forty-five million, six hundred twelve thousand, four hundred thirty-six".