18708768226 has 16 divisors (see below), whose sum is σ = 29718312480. Its totient is φ = 8802826560.

The previous prime is 18708768217. The next prime is 18708768233. The reversal of 18708768226 is 62286780781.

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, 216721 + ... + 290491.

It is an arithmetic number, because the mean of its divisors is an integer number (1857394530).

Almost surely, 2^18708768226 is an apocalyptic number.

18708768226 is a deficient number, since it is larger than the sum of its proper divisors (11009544254).

18708768226 is a wasteful number, since it uses less digits than its factorization.

18708768226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81249.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 18708768226 in words is "eighteen billion, seven hundred eight million, seven hundred sixty-eight thousand, two hundred twenty-six".