2118713278 has 16 divisors (see below), whose sum is σ = 3508759296. Its totient is φ = 951447640.

The previous prime is 2118713269. The next prime is 2118713297. The reversal of 2118713278 is 8723178112.

It is a self number, because there is not a number n which added to its sum of digits gives 2118713278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578326 + ... + 581977.

It is an arithmetic number, because the mean of its divisors is an integer number (219297456).

Almost surely, 2^2118713278 is an apocalyptic number.

2118713278 is a deficient number, since it is larger than the sum of its proper divisors (1390046018).

2118713278 is a wasteful number, since it uses less digits than its factorization.

2118713278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160399.

The product of its digits is 37632, while the sum is 40.

The square root of 2118713278 is about 46029.4827040235. The cubic root of 2118713278 is about 1284.3717051421.

The spelling of 2118713278 in words is "two billion, one hundred eighteen million, seven hundred thirteen thousand, two hundred seventy-eight".