8538172044 has 24 divisors (see below), whose sum is σ = 20970949440. Its totient is φ = 2696264784.

The previous prime is 8538172039. The next prime is 8538172099. The reversal of 8538172044 is 4402718358.

It is a junction number, because it is equal to n+sod(n) for n = 8538171987 and 8538172005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18723834 + ... + 18724289.

It is an arithmetic number, because the mean of its divisors is an integer number (873789560).

Almost surely, 2^8538172044 is an apocalyptic number.

It is an amenable number.

8538172044 is an abundant number, since it is smaller than the sum of its proper divisors (12432777396).

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

8538172044 is a wasteful number, since it uses less digits than its factorization.

8538172044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37448149 (or 37448147 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 8538172044 is about 92402.2296484235. The cubic root of 8538172044 is about 2043.8779914867.

The spelling of 8538172044 in words is "eight billion, five hundred thirty-eight million, one hundred seventy-two thousand, forty-four".