18163854167 has 6 divisors (see below), whose sum is σ = 18439007328. Its totient is φ = 17892747444.

The previous prime is 18163854143. The next prime is 18163854173. The reversal of 18163854167 is 76145836181.

It is a happy number.

It is not a de Polignac number, because 18163854167 - 2¹⁰ = 18163853143 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18163854127) 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 5 ways as a sum of consecutive naturals, for example, 2018663 + ... + 2027640.

It is an arithmetic number, because the mean of its divisors is an integer number (3073167888).

Almost surely, 2^18163854167 is an apocalyptic number.

18163854167 is a deficient number, since it is larger than the sum of its proper divisors (275153161).

18163854167 is an frugal number, since it uses more digits than its factorization.

18163854167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046437 (or 4046370 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The spelling of 18163854167 in words is "eighteen billion, one hundred sixty-three million, eight hundred fifty-four thousand, one hundred sixty-seven".