838318156818 has 32 divisors (see below), whose sum is σ = 1775303697600. Its totient is φ = 262995594240.

The previous prime is 838318156817. The next prime is 838318156877. The reversal of 838318156818 is 818651813838.

It is not an unprimeable number, because it can be changed into a prime (838318156813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6391578 + ... + 6521418.

It is an arithmetic number, because the mean of its divisors is an integer number (55478240550).

Almost surely, 2^838318156818 is an apocalyptic number.

838318156818 is an abundant number, since it is smaller than the sum of its proper divisors (936985540782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

838318156818 is a wasteful number, since it uses less digits than its factorization.

838318156818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193162.

The product of its digits is 8847360, while the sum is 60.

The spelling of 838318156818 in words is "eight hundred thirty-eight billion, three hundred eighteen million, one hundred fifty-six thousand, eight hundred eighteen".