9138206371 has 4 divisors (see below), whose sum is σ = 10443664432. Its totient is φ = 7832748312.

The previous prime is 9138206369. The next prime is 9138206377. The reversal of 9138206371 is 1736028319.

9138206371 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 1736028319 = 38317 ⋅45307.

It is a cyclic number.

It is not a de Polignac number, because 9138206371 - 2¹ = 9138206369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138206377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652729020 + ... + 652729033.

It is an arithmetic number, because the mean of its divisors is an integer number (2610916108).

Almost surely, 2^9138206371 is an apocalyptic number.

9138206371 is a deficient number, since it is larger than the sum of its proper divisors (1305458061).

9138206371 is a wasteful number, since it uses less digits than its factorization.

9138206371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305458060.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 9138206371 is about 95593.9661851102. The cubic root of 9138206371 is about 2090.6772200803.

The spelling of 9138206371 in words is "nine billion, one hundred thirty-eight million, two hundred six thousand, three hundred seventy-one".