8351181648 has 100 divisors (see below), whose sum is σ = 24192329568. Its totient is φ = 2781241920.

The previous prime is 8351181647. The next prime is 8351181673. The reversal of 8351181648 is 8461811538.

8351181648 is a `hidden beast` number, since 83 + 511 + 8 + 16 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8351181647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1971693 + ... + 1975923.

Almost surely, 2^8351181648 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 8351181648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12096164784).

8351181648 is an abundant number, since it is smaller than the sum of its proper divisors (15841147920).

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

8351181648 is a wasteful number, since it uses less digits than its factorization.

8351181648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774 (or 5759 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 8351181648 is about 91384.7998739396. The cubic root of 8351181648 is about 2028.8470604545.

The spelling of 8351181648 in words is "eight billion, three hundred fifty-one million, one hundred eighty-one thousand, six hundred forty-eight".