9138405344 has 12 divisors (see below), whose sum is σ = 17991235584. Its totient is φ = 4569202656.

The previous prime is 9138405317. The next prime is 9138405347. The reversal of 9138405344 is 4435048319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138405347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142787552 + ... + 142787615.

It is an arithmetic number, because the mean of its divisors is an integer number (1499269632).

Almost surely, 2^9138405344 is an apocalyptic number.

It is an amenable number.

9138405344 is a deficient number, since it is larger than the sum of its proper divisors (8852830240).

9138405344 is a wasteful number, since it uses less digits than its factorization.

9138405344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285575177 (or 285575169 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 9138405344 is about 95595.0068988961. The cubic root of 9138405344 is about 2090.6923939296.

The spelling of 9138405344 in words is "nine billion, one hundred thirty-eight million, four hundred five thousand, three hundred forty-four".