18793639036 has 6 divisors (see below), whose sum is σ = 32888868320. Its totient is φ = 9396819516.

The previous prime is 18793639013. The next prime is 18793639079. The reversal of 18793639036 is 63093639781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2349204876 + ... + 2349204883.

Almost surely, 2^18793639036 is an apocalyptic number.

It is an amenable number.

18793639036 is a deficient number, since it is larger than the sum of its proper divisors (14095229284).

18793639036 is a wasteful number, since it uses less digits than its factorization.

18793639036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698409763 (or 4698409761 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 18793639036 in words is "eighteen billion, seven hundred ninety-three million, six hundred thirty-nine thousand, thirty-six".