3639144573 has 6 divisors (see below), whose sum is σ = 5256542174. Its totient is φ = 2426096376.

The previous prime is 3639144557. The next prime is 3639144577. The reversal of 3639144573 is 3754419363.

3639144573 is a `hidden beast` number, since 3 + 6 + 39 + 1 + 44 + 573 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2783406564 + 855738009 = 52758^2 + 29253^2 .

It is not a de Polignac number, because 3639144573 - 2⁴ = 3639144557 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 (3639144577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202174690 + ... + 202174707.

Almost surely, 2^3639144573 is an apocalyptic number.

It is an amenable number.

3639144573 is a deficient number, since it is larger than the sum of its proper divisors (1617397601).

3639144573 is a wasteful number, since it uses less digits than its factorization.

3639144573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404349403 (or 404349400 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 3639144573 is about 60325.3228172050. The cubic root of 3639144573 is about 1538.1538247956.

The spelling of 3639144573 in words is "three billion, six hundred thirty-nine million, one hundred forty-four thousand, five hundred seventy-three".