838718187873 has 8 divisors (see below), whose sum is σ = 1118678282688. Its totient is φ = 558951775824.

The previous prime is 838718187787. The next prime is 838718187889. The reversal of 838718187873 is 378781817838.

It is a happy number.

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

It is not a de Polignac number, because 838718187873 - 2⁹ = 838718187361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838718187798 and 838718187807.

It is not an unprimeable number, because it can be changed into a prime (838718187893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48410586 + ... + 48427907.

It is an arithmetic number, because the mean of its divisors is an integer number (139834785336).

Almost surely, 2^838718187873 is an apocalyptic number.

It is an amenable number.

838718187873 is a deficient number, since it is larger than the sum of its proper divisors (279960094815).

838718187873 is a wasteful number, since it uses less digits than its factorization.

838718187873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96841383.

The product of its digits is 101154816, while the sum is 69.

The spelling of 838718187873 in words is "eight hundred thirty-eight billion, seven hundred eighteen million, one hundred eighty-seven thousand, eight hundred seventy-three".