9138384434 has 8 divisors (see below), whose sum is σ = 13835685168. Its totient is φ = 4526489380.

The previous prime is 9138384427. The next prime is 9138384439. The reversal of 9138384434 is 4344838319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9138384439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21351152 + ... + 21351579.

It is an arithmetic number, because the mean of its divisors is an integer number (1729460646).

Almost surely, 2^9138384434 is an apocalyptic number.

9138384434 is a deficient number, since it is larger than the sum of its proper divisors (4697300734).

9138384434 is a wasteful number, since it uses less digits than its factorization.

9138384434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42702840.

The product of its digits is 995328, while the sum is 47.

The square root of 9138384434 is about 95594.8975311967. The cubic root of 9138384434 is about 2090.6907993256.

The spelling of 9138384434 in words is "nine billion, one hundred thirty-eight million, three hundred eighty-four thousand, four hundred thirty-four".