834891934208 has 80 divisors (see below), whose sum is σ = 1675581193440. Its totient is φ = 415589830656.

The previous prime is 834891934157. The next prime is 834891934223. The reversal of 834891934208 is 802439198438.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284072003 + ... + 284074941.

It is an arithmetic number, because the mean of its divisors is an integer number (20944764918).

Almost surely, 2^834891934208 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 834891934208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837790596720).

834891934208 is an abundant number, since it is smaller than the sum of its proper divisors (840689259232).

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

834891934208 is a wasteful number, since it uses less digits than its factorization.

834891934208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237 (or 5221 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 834891934208 in words is "eight hundred thirty-four billion, eight hundred ninety-one million, nine hundred thirty-four thousand, two hundred eight".