3581616842 has 4 divisors (see below), whose sum is σ = 5372425266. Its totient is φ = 1790808420.

The previous prime is 3581616827. The next prime is 3581616847. The reversal of 3581616842 is 2486161853.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2294314201 + 1287302641 = 47899^2 + 35879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3581616793 and 3581616802.

It is not an unprimeable number, because it can be changed into a prime (3581616847) 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 as a sum of consecutive naturals, namely, 895404209 + ... + 895404212.

Almost surely, 2^3581616842 is an apocalyptic number.

3581616842 is a deficient number, since it is larger than the sum of its proper divisors (1790808424).

3581616842 is a wasteful number, since it uses less digits than its factorization.

3581616842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790808423.

The product of its digits is 276480, while the sum is 44.

The square root of 3581616842 is about 59846.6109483235. The cubic root of 3581616842 is about 1530.0056732955.

The spelling of 3581616842 in words is "three billion, five hundred eighty-one million, six hundred sixteen thousand, eight hundred forty-two".