18812705143 has 4 divisors (see below), whose sum is σ = 18925356240. Its totient is φ = 18700054048.

The previous prime is 18812705113. The next prime is 18812705161. The reversal of 18812705143 is 34150721881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18812705143 - 2¹³ = 18812696951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18812705096 and 18812705105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18812705113) 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 3 ways as a sum of consecutive naturals, for example, 56325298 + ... + 56325631.

It is an arithmetic number, because the mean of its divisors is an integer number (4731339060).

Almost surely, 2^18812705143 is an apocalyptic number.

18812705143 is a deficient number, since it is larger than the sum of its proper divisors (112651097).

18812705143 is a wasteful number, since it uses less digits than its factorization.

18812705143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112651096.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 18812705143 in words is "eighteen billion, eight hundred twelve million, seven hundred five thousand, one hundred forty-three".