2678881818 has 16 divisors (see below), whose sum is σ = 5388735456. Its totient is φ = 887798640.

The previous prime is 2678881817. The next prime is 2678881823. The reversal of 2678881818 is 8181888762.

It is not an unprimeable number, because it can be changed into a prime (2678881813) 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 7 ways as a sum of consecutive naturals, for example, 1289368 + ... + 1291443.

It is an arithmetic number, because the mean of its divisors is an integer number (336795966).

Almost surely, 2^2678881818 is an apocalyptic number.

2678881818 is an abundant number, since it is smaller than the sum of its proper divisors (2709853638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2678881818 is a wasteful number, since it uses less digits than its factorization.

2678881818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580989.

The product of its digits is 2752512, while the sum is 57.

The square root of 2678881818 is about 51757.9155105767. The cubic root of 2678881818 is about 1388.8367021155.

The spelling of 2678881818 in words is "two billion, six hundred seventy-eight million, eight hundred eighty-one thousand, eight hundred eighteen".