9138272207 has 4 divisors (see below), whose sum is σ = 9158009760. Its totient is φ = 9118534656.

The previous prime is 9138272153. The next prime is 9138272219. The reversal of 9138272207 is 7022728319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7022728319 = 491 ⋅14302909.

It is a cyclic number.

It is not a de Polignac number, because 9138272207 - 2¹⁴ = 9138255823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138272257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9868082 + ... + 9869007.

It is an arithmetic number, because the mean of its divisors is an integer number (2289502440).

Almost surely, 2^9138272207 is an apocalyptic number.

9138272207 is a deficient number, since it is larger than the sum of its proper divisors (19737553).

9138272207 is a wasteful number, since it uses less digits than its factorization.

9138272207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19737552.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 9138272207 is about 95594.3105367678. The cubic root of 9138272207 is about 2090.6822408137.

The spelling of 9138272207 in words is "nine billion, one hundred thirty-eight million, two hundred seventy-two thousand, two hundred seven".