18585235995 has 16 divisors (see below), whose sum is σ = 29999534112. Its totient is φ = 9824407040.

The previous prime is 18585235973. The next prime is 18585236011. The reversal of 18585235995 is 59953258581.

It is a happy number.

It is not a de Polignac number, because 18585235995 - 2⁹ = 18585235483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5480676 + ... + 5484065.

It is an arithmetic number, because the mean of its divisors is an integer number (1874970882).

Almost surely, 2^18585235995 is an apocalyptic number.

18585235995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18585235995 is a deficient number, since it is larger than the sum of its proper divisors (11414298117).

18585235995 is a wasteful number, since it uses less digits than its factorization.

18585235995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10964862.

The product of its digits is 19440000, while the sum is 60.

The spelling of 18585235995 in words is "eighteen billion, five hundred eighty-five million, two hundred thirty-five thousand, nine hundred ninety-five".