18383220698 has 8 divisors (see below), whose sum is σ = 28525687380. Its totient is φ = 8874658240.

The previous prime is 18383220679. The next prime is 18383220731. The reversal of 18383220698 is 89602238381.

It can be written as a sum of positive squares in 2 ways, for example, as 18124429129 + 258791569 = 134627^2 + 16087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158475983 + ... + 158476098.

Almost surely, 2^18383220698 is an apocalyptic number.

18383220698 is a deficient number, since it is larger than the sum of its proper divisors (10142466682).

18383220698 is a wasteful number, since it uses less digits than its factorization.

18383220698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316952112.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 18383220698 in words is "eighteen billion, three hundred eighty-three million, two hundred twenty thousand, six hundred ninety-eight".