3226881821 has 4 divisors (see below), whose sum is σ = 3227036700. Its totient is φ = 3226726944.

The previous prime is 3226881799. The next prime is 3226881841. The reversal of 3226881821 is 1281886223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1281886223 = 1607 ⋅797689.

It can be written as a sum of positive squares in 2 ways, for example, as 2684690596 + 542191225 = 51814^2 + 23285^2 .

It is a cyclic number.

It is not a de Polignac number, because 3226881821 - 2¹⁸ = 3226619677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3226881841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40226 + ... + 89843.

It is an arithmetic number, because the mean of its divisors is an integer number (806759175).

Almost surely, 2^3226881821 is an apocalyptic number.

It is an amenable number.

3226881821 is a deficient number, since it is larger than the sum of its proper divisors (154879).

3226881821 is a wasteful number, since it uses less digits than its factorization.

3226881821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154878.

The product of its digits is 73728, while the sum is 41.

The square root of 3226881821 is about 56805.6495517831. The cubic root of 3226881821 is about 1477.7274931977.

The spelling of 3226881821 in words is "three billion, two hundred twenty-six million, eight hundred eighty-one thousand, eight hundred twenty-one".