2681278441 has 4 divisors (see below), whose sum is σ = 2688279552. Its totient is φ = 2674277332.

The previous prime is 2681278421. The next prime is 2681278463. The reversal of 2681278441 is 1448721862.

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.

It is a cyclic number.

It is not a de Polignac number, because 2681278441 - 2¹¹ = 2681276393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2681278421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3499981 + ... + 3500746.

It is an arithmetic number, because the mean of its divisors is an integer number (672069888).

Almost surely, 2^2681278441 is an apocalyptic number.

It is an amenable number.

2681278441 is a deficient number, since it is larger than the sum of its proper divisors (7001111).

2681278441 is an equidigital number, since it uses as much as digits as its factorization.

2681278441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001110.

The product of its digits is 172032, while the sum is 43.

The square root of 2681278441 is about 51781.0625711756. The cubic root of 2681278441 is about 1389.2507462452.

The spelling of 2681278441 in words is "two billion, six hundred eighty-one million, two hundred seventy-eight thousand, four hundred forty-one".