9138730040 has 128 divisors (see below), whose sum is σ = 22902264000. Its totient is φ = 3254169600.

The previous prime is 9138730039. The next prime is 9138730061. The reversal of 9138730040 is 400378319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4267370 + ... + 4269510.

Almost surely, 2^9138730040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9138730040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11451132000).

9138730040 is an abundant number, since it is smaller than the sum of its proper divisors (13763533960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9138730040 is a wasteful number, since it uses less digits than its factorization.

9138730040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 9138730040 is about 95596.7051733479. The cubic root of 9138730040 is about 2090.7171550483.

The spelling of 9138730040 in words is "nine billion, one hundred thirty-eight million, seven hundred thirty thousand, forty".