18836009885 has 48 divisors (see below), whose sum is σ = 28903355712. Its totient is φ = 11652076800.

The previous prime is 18836009833. The next prime is 18836009887. The reversal of 18836009885 is 58890063881.

It is not a de Polignac number, because 18836009885 - 2⁶ = 18836009821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18836009885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836009887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326369 + ... + 379721.

It is an arithmetic number, because the mean of its divisors is an integer number (602153244).

Almost surely, 2^18836009885 is an apocalyptic number.

It is an amenable number.

18836009885 is a deficient number, since it is larger than the sum of its proper divisors (10067345827).

18836009885 is a wasteful number, since it uses less digits than its factorization.

18836009885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53514 (or 53507 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 18836009885 in words is "eighteen billion, eight hundred thirty-six million, nine thousand, eight hundred eighty-five".