838747539864 has 192 divisors, whose sum is σ = 2460831959040. Its totient is φ = 256551079680.

The previous prime is 838747539853. The next prime is 838747539907. The reversal of 838747539864 is 468935747838.

838747539864 is a `hidden beast` number, since 8 + 3 + 8 + 7 + 4 + 7 + 539 + 86 + 4 = 666.

838747539864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 838747539792 and 838747539801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214676199 + ... + 214680105.

It is an arithmetic number, because the mean of its divisors is an integer number (12816833120).

Almost surely, 2^838747539864 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 838747539864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230415979520).

838747539864 is an abundant number, since it is smaller than the sum of its proper divisors (1622084419176).

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

838747539864 is a wasteful number, since it uses less digits than its factorization.

838747539864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5223 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 72.

The spelling of 838747539864 in words is "eight hundred thirty-eight billion, seven hundred forty-seven million, five hundred thirty-nine thousand, eight hundred sixty-four".