3641316021 has 48 divisors (see below), whose sum is σ = 6083334400. Its totient is φ = 2055849984.

The previous prime is 3641315987. The next prime is 3641316043. The reversal of 3641316021 is 1206131463.

3641316021 is a `hidden beast` number, since 3 + 641 + 3 + 16 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 3641316021 - 2¹⁰ = 3641314997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641316061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3961800 + ... + 3962718.

Almost surely, 2^3641316021 is an apocalyptic number.

It is an amenable number.

3641316021 is a deficient number, since it is larger than the sum of its proper divisors (2442018379).

3641316021 is a wasteful number, since it uses less digits than its factorization.

3641316021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3641316021 is about 60343.3179482202. The cubic root of 3641316021 is about 1538.4596985963.

Adding to 3641316021 its reverse (1206131463), we get a palindrome (4847447484).

The spelling of 3641316021 in words is "three billion, six hundred forty-one million, three hundred sixteen thousand, twenty-one".