3205542881 has 4 divisors (see below), whose sum is σ = 3206054592. Its totient is φ = 3205031172.

The previous prime is 3205542859. The next prime is 3205542943. The reversal of 3205542881 is 1882455023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1882455023 = 83 ⋅22680181.

It is a cyclic number.

It is not a de Polignac number, because 3205542881 - 2¹⁴ = 3205526497 is a prime.

It is a super-2 number, since 2×3205542881² = 20551010323859560322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205542581) 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 in 3 ways as a sum of consecutive naturals, for example, 246341 + ... + 259026.

It is an arithmetic number, because the mean of its divisors is an integer number (801513648).

Almost surely, 2^3205542881 is an apocalyptic number.

It is an amenable number.

3205542881 is a deficient number, since it is larger than the sum of its proper divisors (511711).

3205542881 is an equidigital number, since it uses as much as digits as its factorization.

3205542881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511710.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 3205542881 is about 56617.5139069175. The cubic root of 3205542881 is about 1474.4629481759.

The spelling of 3205542881 in words is "three billion, two hundred five million, five hundred forty-two thousand, eight hundred eighty-one".