8538172004 has 12 divisors (see below), whose sum is σ = 15820730604. Its totient is φ = 4017963264.

The previous prime is 8538171997. The next prime is 8538172007. The reversal of 8538172004 is 4002718358.

It can be written as a sum of positive squares in 2 ways, for example, as 5859902500 + 2678269504 = 76550^2 + 51752^2 .

It is not an unprimeable number, because it can be changed into a prime (8538172007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62780609 + ... + 62780744.

It is an arithmetic number, because the mean of its divisors is an integer number (1318394217).

Almost surely, 2^8538172004 is an apocalyptic number.

It is an amenable number.

8538172004 is a deficient number, since it is larger than the sum of its proper divisors (7282558600).

8538172004 is a wasteful number, since it uses less digits than its factorization.

8538172004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125561374 (or 125561372 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 8538172004 is about 92402.2294319785. The cubic root of 8538172004 is about 2043.8779882950.

The spelling of 8538172004 in words is "eight billion, five hundred thirty-eight million, one hundred seventy-two thousand, four".