838474156668 has 96 divisors (see below), whose sum is σ = 2162639485440. Its totient is φ = 251655655680.

The previous prime is 838474156607. The next prime is 838474156711. The reversal of 838474156668 is 866651474838.

838474156668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×838474156668² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 838474156599 and 838474156608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314098 + ... + 1332518.

It is an arithmetic number, because the mean of its divisors is an integer number (22527494640).

Almost surely, 2^838474156668 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 838474156668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081319742720).

838474156668 is an abundant number, since it is smaller than the sum of its proper divisors (1324165328772).

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

838474156668 is a wasteful number, since it uses less digits than its factorization.

838474156668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018627 (or 1018625 counting only the distinct ones).

The product of its digits is 185794560, while the sum is 66.

The spelling of 838474156668 in words is "eight hundred thirty-eight billion, four hundred seventy-four million, one hundred fifty-six thousand, six hundred sixty-eight".