2136779218 has 16 divisors (see below), whose sum is σ = 3789362880. Its totient is φ = 884184336.

The previous prime is 2136779207. The next prime is 2136779221. The reversal of 2136779218 is 8129776312.

It is an unprimeable number.

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, 2631096 + ... + 2631907.

It is an arithmetic number, because the mean of its divisors is an integer number (236835180).

Almost surely, 2^2136779218 is an apocalyptic number.

2136779218 is a deficient number, since it is larger than the sum of its proper divisors (1652583662).

2136779218 is a wasteful number, since it uses less digits than its factorization.

2136779218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263041.

The product of its digits is 254016, while the sum is 46.

The square root of 2136779218 is about 46225.3092796576. The cubic root of 2136779218 is about 1288.0119243427.

The spelling of 2136779218 in words is "two billion, one hundred thirty-six million, seven hundred seventy-nine thousand, two hundred eighteen".