18093778266 has 32 divisors (see below), whose sum is σ = 38468945088. Its totient is φ = 5653856000.

The previous prime is 18093778259. The next prime is 18093778271. The reversal of 18093778266 is 66287739081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327765 + ... + 378968.

It is an arithmetic number, because the mean of its divisors is an integer number (1202154534).

Almost surely, 2^18093778266 is an apocalyptic number.

18093778266 is an abundant number, since it is smaller than the sum of its proper divisors (20375166822).

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

18093778266 is a wasteful number, since it uses less digits than its factorization.

18093778266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707006.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 18093778266 in words is "eighteen billion, ninety-three million, seven hundred seventy-eight thousand, two hundred sixty-six".