918854685143 has 4 divisors (see below), whose sum is σ = 918992803128. Its totient is φ = 918716567160.

The previous prime is 918854685139. The next prime is 918854685223. The reversal of 918854685143 is 341586458819.

918854685143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 918854685143 - 2² = 918854685139 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 (918850685143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69049013 + ... + 69062318.

It is an arithmetic number, because the mean of its divisors is an integer number (229748200782).

Almost surely, 2^918854685143 is an apocalyptic number.

918854685143 is a deficient number, since it is larger than the sum of its proper divisors (138117985).

918854685143 is a wasteful number, since it uses less digits than its factorization.

918854685143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138117984.

The product of its digits is 33177600, while the sum is 62.

The spelling of 918854685143 in words is "nine hundred eighteen billion, eight hundred fifty-four million, six hundred eighty-five thousand, one hundred forty-three".