838169856 has 180 divisors, whose sum is σ = 2534576352. Its totient is φ = 275457024.

The previous prime is 838169851. The next prime is 838169863. The reversal of 838169856 is 658961838.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838169851) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1720845 + ... + 1721331.

Almost surely, 2^838169856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 838169856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267288176).

838169856 is an abundant number, since it is smaller than the sum of its proper divisors (1696406496).

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

838169856 is an equidigital number, since it uses as much as digits as its factorization.

838169856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 575 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 838169856 is about 28951.1632926900. The cubic root of 838169856 is about 942.8530550000.

The spelling of 838169856 in words is "eight hundred thirty-eight million, one hundred sixty-nine thousand, eight hundred fifty-six".