9197139109 has 4 divisors (see below), whose sum is σ = 9220075020. Its totient is φ = 9174203200.

The previous prime is 9197139073. The next prime is 9197139113. The reversal of 9197139109 is 9019317919.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6334568100 + 2862571009 = 79590^2 + 53503^2 .

It is a cyclic number.

It is not a de Polignac number, because 9197139109 - 2¹⁵ = 9197106341 is a prime.

It is a super-3 number, since 3×9197139109³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9197139169) 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, 11467354 + ... + 11468155.

It is an arithmetic number, because the mean of its divisors is an integer number (2305018755).

Almost surely, 2^9197139109 is an apocalyptic number.

It is an amenable number.

9197139109 is a deficient number, since it is larger than the sum of its proper divisors (22935911).

9197139109 is a wasteful number, since it uses less digits than its factorization.

9197139109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22935910.

The product of its (nonzero) digits is 137781, while the sum is 49.

The square root of 9197139109 is about 95901.7158814168. The cubic root of 9197139109 is about 2095.1618863175.

The spelling of 9197139109 in words is "nine billion, one hundred ninety-seven million, one hundred thirty-nine thousand, one hundred nine".