18685033336 has 32 divisors (see below), whose sum is σ = 37130536080. Its totient is φ = 8784601600.

The previous prime is 18685033313. The next prime is 18685033349. The reversal of 18685033336 is 63333058681.

It is a happy number.

It is a super-3 number, since 3×18685033336³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

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, 79551 + ... + 209041.

Almost surely, 2^18685033336 is an apocalyptic number.

It is an amenable number.

18685033336 is a deficient number, since it is larger than the sum of its proper divisors (18445502744).

18685033336 is a wasteful number, since it uses less digits than its factorization.

18685033336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130575 (or 130571 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 18685033336 in words is "eighteen billion, six hundred eighty-five million, thirty-three thousand, three hundred thirty-six".