2111678786 has 16 divisors (see below), whose sum is σ = 3621692736. Its totient is φ = 904587216.

The previous prime is 2111678771. The next prime is 2111678887. The reversal of 2111678786 is 6878761112.

It is a self number, because there is not a number n which added to its sum of digits gives 2111678786.

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, 2396 + ... + 65031.

It is an arithmetic number, because the mean of its divisors is an integer number (226355796).

Almost surely, 2^2111678786 is an apocalyptic number.

2111678786 is a deficient number, since it is larger than the sum of its proper divisors (1510013950).

2111678786 is a wasteful number, since it uses less digits than its factorization.

2111678786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69673.

The product of its digits is 225792, while the sum is 47.

The square root of 2111678786 is about 45953.0062781533. The cubic root of 2111678786 is about 1282.9486841972.

The spelling of 2111678786 in words is "two billion, one hundred eleven million, six hundred seventy-eight thousand, seven hundred eighty-six".