9138698012 has 24 divisors (see below), whose sum is σ = 16305599856. Its totient is φ = 4480679808.

The previous prime is 9138698011. The next prime is 9138698027. The reversal of 9138698012 is 2108968319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138698011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39938 + ... + 140969.

It is an arithmetic number, because the mean of its divisors is an integer number (679399994).

Almost surely, 2^9138698012 is an apocalyptic number.

It is an amenable number.

9138698012 is a deficient number, since it is larger than the sum of its proper divisors (7166901844).

9138698012 is a wasteful number, since it uses less digits than its factorization.

9138698012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181157 (or 181155 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 9138698012 is about 95596.5376569675. The cubic root of 9138698012 is about 2090.7147126386.

The spelling of 9138698012 in words is "nine billion, one hundred thirty-eight million, six hundred ninety-eight thousand, twelve".