3606821838 has 16 divisors (see below), whose sum is σ = 8015159760. Its totient is φ = 1202273928.

The previous prime is 3606821833. The next prime is 3606821839. The reversal of 3606821838 is 8381286063.

3606821838 is a `hidden beast` number, since 3 + 606 + 8 + 2 + 1 + 8 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3606821793 and 3606821802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3606821833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33396445 + ... + 33396552.

It is an arithmetic number, because the mean of its divisors is an integer number (500947485).

Almost surely, 2^3606821838 is an apocalyptic number.

3606821838 is an abundant number, since it is smaller than the sum of its proper divisors (4408337922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3606821838 is a wasteful number, since it uses less digits than its factorization.

3606821838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66793008 (or 66793002 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 3606821838 is about 60056.8217440783. The cubic root of 3606821838 is about 1533.5863352002.

The spelling of 3606821838 in words is "three billion, six hundred six million, eight hundred twenty-one thousand, eight hundred thirty-eight".