9172043238 has 16 divisors (see below), whose sum is σ = 18411780096. Its totient is φ = 3046065480.

The previous prime is 9172043159. The next prime is 9172043249. The reversal of 9172043238 is 8323402719.

It is a junction number, because it is equal to n+sod(n) for n = 9172043196 and 9172043205.

It is a congruent number.

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, 2818806 + ... + 2822057.

It is an arithmetic number, because the mean of its divisors is an integer number (1150736256).

Almost surely, 2^9172043238 is an apocalyptic number.

9172043238 is an abundant number, since it is smaller than the sum of its proper divisors (9239736858).

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

9172043238 is a wasteful number, since it uses less digits than its factorization.

9172043238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641139.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 9172043238 is about 95770.7848876681. The cubic root of 9172043238 is about 2093.2544884961.

The spelling of 9172043238 in words is "nine billion, one hundred seventy-two million, forty-three thousand, two hundred thirty-eight".