18028683338 has 8 divisors (see below), whose sum is σ = 27045301188. Its totient is φ = 9013582944.

The previous prime is 18028683317. The next prime is 18028683359. The reversal of 18028683338 is 83338682081.

It is an interprime number because it is at equal distance from previous prime (18028683317) and next prime (18028683359).

It can be written as a sum of positive squares in 2 ways, for example, as 17884515289 + 144168049 = 133733^2 + 12007^2 .

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, 349181 + ... + 397472.

Almost surely, 2^18028683338 is an apocalyptic number.

18028683338 is a deficient number, since it is larger than the sum of its proper divisors (9016617850).

18028683338 is a wasteful number, since it uses less digits than its factorization.

18028683338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758728.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 18028683338 in words is "eighteen billion, twenty-eight million, six hundred eighty-three thousand, three hundred thirty-eight".