18485616143 has 8 divisors (see below), whose sum is σ = 19344935808. Its totient is φ = 17630929624.

The previous prime is 18485616133. The next prime is 18485616209. The reversal of 18485616143 is 34161658481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18485616143 - 2⁸ = 18485615887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18485616113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150121 + ... + 1166082.

It is an arithmetic number, because the mean of its divisors is an integer number (2418116976).

Almost surely, 2^18485616143 is an apocalyptic number.

18485616143 is a deficient number, since it is larger than the sum of its proper divisors (859319665).

18485616143 is a wasteful number, since it uses less digits than its factorization.

18485616143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316573.

The product of its digits is 552960, while the sum is 47.

The spelling of 18485616143 in words is "eighteen billion, four hundred eighty-five million, six hundred sixteen thousand, one hundred forty-three".