9838438142 has 16 divisors (see below), whose sum is σ = 15899587200. Its totient is φ = 4538896032.

The previous prime is 9838438139. The next prime is 9838438171. The reversal of 9838438142 is 2418348389.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16493 + ... + 141240.

It is an arithmetic number, because the mean of its divisors is an integer number (993724200).

Almost surely, 2^9838438142 is an apocalyptic number.

9838438142 is a deficient number, since it is larger than the sum of its proper divisors (6061149058).

9838438142 is a wasteful number, since it uses less digits than its factorization.

9838438142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160147.

The product of its digits is 1327104, while the sum is 50.

The square root of 9838438142 is about 99188.9013045310. The cubic root of 9838438142 is about 2142.7691567484.

The spelling of 9838438142 in words is "nine billion, eight hundred thirty-eight million, four hundred thirty-eight thousand, one hundred forty-two".