9128748137 has 4 divisors (see below), whose sum is σ = 9129173136. Its totient is φ = 9128323140.

The previous prime is 9128748103. The next prime is 9128748217. The reversal of 9128748137 is 7318478219.

It is a happy number.

9128748137 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9128748137 - 2⁶ = 9128748073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9128348137) 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, 178463 + ... + 223844.

It is an arithmetic number, because the mean of its divisors is an integer number (2282293284).

Almost surely, 2^9128748137 is an apocalyptic number.

It is an amenable number.

9128748137 is a deficient number, since it is larger than the sum of its proper divisors (424999).

9128748137 is a wasteful number, since it uses less digits than its factorization.

9128748137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424998.

The product of its digits is 677376, while the sum is 50.

The square root of 9128748137 is about 95544.4825042242. The cubic root of 9128748137 is about 2089.9556729226.

The spelling of 9128748137 in words is "nine billion, one hundred twenty-eight million, seven hundred forty-eight thousand, one hundred thirty-seven".