18147143685 has 16 divisors (see below), whose sum is σ = 31675014720. Its totient is φ = 8798615040.

The previous prime is 18147143669. The next prime is 18147143717. The reversal of 18147143685 is 58634174181.

It is not a de Polignac number, because 18147143685 - 2⁴ = 18147143669 is a prime.

It is a Curzon number.

It is a congruent number.

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, 54991180 + ... + 54991509.

It is an arithmetic number, because the mean of its divisors is an integer number (1979688420).

Almost surely, 2^18147143685 is an apocalyptic number.

18147143685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18147143685 is a deficient number, since it is larger than the sum of its proper divisors (13527871035).

18147143685 is a wasteful number, since it uses less digits than its factorization.

18147143685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109982708.

The product of its digits is 645120, while the sum is 48.

The spelling of 18147143685 in words is "eighteen billion, one hundred forty-seven million, one hundred forty-three thousand, six hundred eighty-five".