3645304531 has 8 divisors (see below), whose sum is σ = 3977641584. Its totient is φ = 3313125120.

The previous prime is 3645304517. The next prime is 3645304561. The reversal of 3645304531 is 1354035463.

3645304531 is digitally balanced in base 3, 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645304531 is a prime.

It is a super-2 number, since 2×3645304531² = 26576490247458259922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645304561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11851 + ... + 86203.

It is an arithmetic number, because the mean of its divisors is an integer number (497205198).

Almost surely, 2^3645304531 is an apocalyptic number.

3645304531 is a deficient number, since it is larger than the sum of its proper divisors (332337053).

3645304531 is a wasteful number, since it uses less digits than its factorization.

3645304531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78821.

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 3645304531 is about 60376.3573843272. The cubic root of 3645304531 is about 1539.0212101311.

Adding to 3645304531 its reverse (1354035463), we get a palindrome (4999339994).

The spelling of 3645304531 in words is "three billion, six hundred forty-five million, three hundred four thousand, five hundred thirty-one".