8637719922 has 72 divisors (see below), whose sum is σ = 21271490604. Its totient is φ = 2517853248.

The previous prime is 8637719921. The next prime is 8637719953. The reversal of 8637719922 is 2299177368.

8637719922 is a `hidden beast` number, since 86 + 377 + 199 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8600522121 + 37197801 = 92739^2 + 6099^2 .

It is a super-3 number, since 3×8637719922³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (8637719921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33348 + ... + 135600.

Almost surely, 2^8637719922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8637719922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10635745302).

8637719922 is an abundant number, since it is smaller than the sum of its proper divisors (12633770682).

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

8637719922 is a wasteful number, since it uses less digits than its factorization.

8637719922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102312 (or 102290 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 8637719922 is about 92939.3346328668. The cubic root of 8637719922 is about 2051.7906164956.

The spelling of 8637719922 in words is "eight billion, six hundred thirty-seven million, seven hundred nineteen thousand, nine hundred twenty-two".