8227109538 has 18 divisors (see below), whose sum is σ = 17826237819. Its totient is φ = 2742241572.

The previous prime is 8227109531. The next prime is 8227109677. The reversal of 8227109538 is 8359017228.

It is a happy number.

8227109538 is a `hidden beast` number, since 8 + 2 + 2 + 7 + 109 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4113554769 + 4113554769 = 64137^2 + 64137^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=64137.

It is a junction number, because it is equal to n+sod(n) for n = 8227109493 and 8227109502.

It is not an unprimeable number, because it can be changed into a prime (8227109531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 374133 + ... + 395511.

Almost surely, 2^8227109538 is an apocalyptic number.

8227109538 is an abundant number, since it is smaller than the sum of its proper divisors (9599128281).

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

8227109538 is an frugal number, since it uses more digits than its factorization.

8227109538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42766 (or 21384 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8227109538 is about 90703.4152499232. The cubic root of 8227109538 is about 2018.7494741723.

The spelling of 8227109538 in words is "eight billion, two hundred twenty-seven million, one hundred nine thousand, five hundred thirty-eight".