18885218835 has 32 divisors (see below), whose sum is σ = 34708303872. Its totient is φ = 8589409920.

The previous prime is 18885218809. The next prime is 18885218839. The reversal of 18885218835 is 53881258881.

It is not a de Polignac number, because 18885218835 - 2⁷ = 18885218707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18885218839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435811 + ... + 477180.

It is an arithmetic number, because the mean of its divisors is an integer number (1084634496).

Almost surely, 2^18885218835 is an apocalyptic number.

18885218835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18885218835 is a deficient number, since it is larger than the sum of its proper divisors (15823085037).

18885218835 is a wasteful number, since it uses less digits than its factorization.

18885218835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913203.

The product of its digits is 4915200, while the sum is 57.

The spelling of 18885218835 in words is "eighteen billion, eight hundred eighty-five million, two hundred eighteen thousand, eight hundred thirty-five".