13638018633 has 8 divisors (see below), whose sum is σ = 18350851200. Its totient is φ = 9008599248.

The previous prime is 13638018631. The next prime is 13638018661. The reversal of 13638018633 is 33681083631.

13638018633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13638018633 - 2¹ = 13638018631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13638018631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20852913 + ... + 20853566.

It is an arithmetic number, because the mean of its divisors is an integer number (2293856400).

Almost surely, 2^13638018633 is an apocalyptic number.

It is an amenable number.

13638018633 is a deficient number, since it is larger than the sum of its proper divisors (4712832567).

13638018633 is a wasteful number, since it uses less digits than its factorization.

13638018633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41706591.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 13638018633 in words is "thirteen billion, six hundred thirty-eight million, eighteen thousand, six hundred thirty-three".