3836221065 has 24 divisors (see below), whose sum is σ = 6878743560. Its totient is φ = 1975432704.

The previous prime is 3836221063. The next prime is 3836221097. The reversal of 3836221065 is 5601226383.

It is a happy number.

3836221065 is a `hidden beast` number, since 383 + 6 + 2 + 210 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 717221961 + 3118999104 = 26781^2 + 55848^2 .

It is not a de Polignac number, because 3836221065 - 2¹ = 3836221063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3836221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1468512 + ... + 1471121.

It is an arithmetic number, because the mean of its divisors is an integer number (286614315).

Almost surely, 2^3836221065 is an apocalyptic number.

It is an amenable number.

3836221065 is a deficient number, since it is larger than the sum of its proper divisors (3042522495).

3836221065 is a wasteful number, since it uses less digits than its factorization.

3836221065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939673 (or 2939670 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 3836221065 is about 61937.2348833882. The cubic root of 3836221065 is about 1565.4332062617.

The spelling of 3836221065 in words is "three billion, eight hundred thirty-six million, two hundred twenty-one thousand, sixty-five".