8371381536 has 192 divisors, whose sum is σ = 29546415360. Its totient is φ = 2251100160.

The previous prime is 8371381477. The next prime is 8371381561. The reversal of 8371381536 is 6351831738.

8371381536 is a `hidden beast` number, since 8 + 37 + 1 + 3 + 81 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8371381491 and 8371381500.

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, 62106 + ... + 143526.

It is an arithmetic number, because the mean of its divisors is an integer number (153887580).

Almost surely, 2^8371381536 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 8371381536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14773207680).

8371381536 is an abundant number, since it is smaller than the sum of its proper divisors (21175033824).

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

8371381536 is a wasteful number, since it uses less digits than its factorization.

8371381536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81464 (or 81450 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 8371381536 is about 91495.2541720061. The cubic root of 8371381536 is about 2030.4815391249.

The spelling of 8371381536 in words is "eight billion, three hundred seventy-one million, three hundred eighty-one thousand, five hundred thirty-six".