9145971109 has 16 divisors (see below), whose sum is σ = 10111106880. Its totient is φ = 8203384960.

The previous prime is 9145971103. The next prime is 9145971113. The reversal of 9145971109 is 9011795419.

It is a cyclic number.

It is not a de Polignac number, because 9145971109 - 2²⁹ = 8609100197 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 (9145971103) 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 15 ways as a sum of consecutive naturals, for example, 721377 + ... + 733945.

It is an arithmetic number, because the mean of its divisors is an integer number (631944180).

Almost surely, 2^9145971109 is an apocalyptic number.

It is an amenable number.

9145971109 is a deficient number, since it is larger than the sum of its proper divisors (965135771).

9145971109 is a wasteful number, since it uses less digits than its factorization.

9145971109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13460.

The product of its (nonzero) digits is 102060, while the sum is 46.

The square root of 9145971109 is about 95634.5706792267. The cubic root of 9145971109 is about 2091.2692022293.

The spelling of 9145971109 in words is "nine billion, one hundred forty-five million, nine hundred seventy-one thousand, one hundred nine".