3261996445 has 4 divisors (see below), whose sum is σ = 3914395740. Its totient is φ = 2609597152.

The previous prime is 3261996427. The next prime is 3261996509. The reversal of 3261996445 is 5446991623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5446991623 = 1571 ⋅3467213.

It can be written as a sum of positive squares in 2 ways, for example, as 1867795524 + 1394200921 = 43218^2 + 37339^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261996445 - 2¹¹ = 3261994397 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 326199640 + ... + 326199649.

It is an arithmetic number, because the mean of its divisors is an integer number (978598935).

Almost surely, 2^3261996445 is an apocalyptic number.

It is an amenable number.

3261996445 is a deficient number, since it is larger than the sum of its proper divisors (652399295).

3261996445 is an equidigital number, since it uses as much as digits as its factorization.

3261996445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652399294.

The product of its digits is 1399680, while the sum is 49.

The square root of 3261996445 is about 57113.8901231566. The cubic root of 3261996445 is about 1483.0683307540.

The spelling of 3261996445 in words is "three billion, two hundred sixty-one million, nine hundred ninety-six thousand, four hundred forty-five".