2678618689 has 16 divisors (see below), whose sum is σ = 2892718080. Its totient is φ = 2472325200.

The previous prime is 2678618687. The next prime is 2678618693. The reversal of 2678618689 is 9868168762.

2678618689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2678618689 - 2¹ = 2678618687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2678618681) 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, 192414 + ... + 205864.

It is an arithmetic number, because the mean of its divisors is an integer number (180794880).

Almost surely, 2^2678618689 is an apocalyptic number.

It is an amenable number.

2678618689 is a deficient number, since it is larger than the sum of its proper divisors (214099391).

2678618689 is a wasteful number, since it uses less digits than its factorization.

2678618689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740.

The product of its digits is 13934592, while the sum is 61.

The square root of 2678618689 is about 51755.3735277797. The cubic root of 2678618689 is about 1388.7912285183.

The spelling of 2678618689 in words is "two billion, six hundred seventy-eight million, six hundred eighteen thousand, six hundred eighty-nine".