2681436779 has 16 divisors (see below), whose sum is σ = 3147344640. Its totient is φ = 2237013600.

The previous prime is 2681436763. The next prime is 2681436811. The reversal of 2681436779 is 9776341862.

It is a cyclic number.

It is not a de Polignac number, because 2681436779 - 2⁴ = 2681436763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2681436779.

It is not an unprimeable number, because it can be changed into a prime (2681456779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9572 + ... + 73854.

It is an arithmetic number, because the mean of its divisors is an integer number (196709040).

Almost surely, 2^2681436779 is an apocalyptic number.

2681436779 is a deficient number, since it is larger than the sum of its proper divisors (465907861).

2681436779 is a wasteful number, since it uses less digits than its factorization.

2681436779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64450.

The product of its digits is 3048192, while the sum is 53.

The square root of 2681436779 is about 51782.5914666309. The cubic root of 2681436779 is about 1389.2780922619.

The spelling of 2681436779 in words is "two billion, six hundred eighty-one million, four hundred thirty-six thousand, seven hundred seventy-nine".