3641488621 has 4 divisors (see below), whose sum is σ = 3855693852. Its totient is φ = 3427283392.

The previous prime is 3641488601. The next prime is 3641488657. The reversal of 3641488621 is 1268841463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1268841463 = 43 ⋅29507941.

It can be written as a sum of positive squares in 2 ways, for example, as 2541571396 + 1099917225 = 50414^2 + 33165^2 .

It is a cyclic number.

It is not a de Polignac number, because 3641488621 - 2⁵ = 3641488589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641488601) 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, 107102590 + ... + 107102623.

It is an arithmetic number, because the mean of its divisors is an integer number (963923463).

Almost surely, 2^3641488621 is an apocalyptic number.

It is an amenable number.

3641488621 is a deficient number, since it is larger than the sum of its proper divisors (214205231).

3641488621 is a wasteful number, since it uses less digits than its factorization.

3641488621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214205230.

The product of its digits is 221184, while the sum is 43.

The square root of 3641488621 is about 60344.7480813368. The cubic root of 3641488621 is about 1538.4840061037.

The spelling of 3641488621 in words is "three billion, six hundred forty-one million, four hundred eighty-eight thousand, six hundred twenty-one".