9172942838 has 16 divisors (see below), whose sum is σ = 14330330784. Its totient is φ = 4399657920.

The previous prime is 9172942799. The next prime is 9172942847. The reversal of 9172942838 is 8382492719.

It is a self number, because there is not a number n which added to its sum of digits gives 9172942838.

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, 867695 + ... + 878202.

It is an arithmetic number, because the mean of its divisors is an integer number (895645674).

Almost surely, 2^9172942838 is an apocalyptic number.

9172942838 is a deficient number, since it is larger than the sum of its proper divisors (5157387946).

9172942838 is a wasteful number, since it uses less digits than its factorization.

9172942838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746007.

The product of its digits is 1741824, while the sum is 53.

The square root of 9172942838 is about 95775.4814031232. The cubic root of 9172942838 is about 2093.3229221819.

The spelling of 9172942838 in words is "nine billion, one hundred seventy-two million, nine hundred forty-two thousand, eight hundred thirty-eight".