9131107838 has 4 divisors (see below), whose sum is σ = 13696661760. Its totient is φ = 4565553918.

The previous prime is 9131107831. The next prime is 9131107859. The reversal of 9131107838 is 8387011319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8387011319 = 17 ⋅493353607.

It is a junction number, because it is equal to n+sod(n) for n = 9131107795 and 9131107804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131107831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2282776958 + ... + 2282776961.

It is an arithmetic number, because the mean of its divisors is an integer number (3424165440).

Almost surely, 2^9131107838 is an apocalyptic number.

9131107838 is a deficient number, since it is larger than the sum of its proper divisors (4565553922).

9131107838 is a wasteful number, since it uses less digits than its factorization.

9131107838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565553921.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 9131107838 is about 95556.8304099712. The cubic root of 9131107838 is about 2090.1357357873.

The spelling of 9131107838 in words is "nine billion, one hundred thirty-one million, one hundred seven thousand, eight hundred thirty-eight".