9181909100009 has 4 divisors (see below), whose sum is σ = 9181920109200. Its totient is φ = 9181898090820.

The previous prime is 9181909099933. The next prime is 9181909100033. The reversal of 9181909100009 is 9000019091819.

It is a happy number.

9181909100009 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9181909100009 - 2²⁴ = 9181892322793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9181909100069) 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, 4140959 + ... + 5959140.

It is an arithmetic number, because the mean of its divisors is an integer number (2295480027300).

Almost surely, 2^{9181909100009} is an apocalyptic number.

It is an amenable number.

9181909100009 is a deficient number, since it is larger than the sum of its proper divisors (11009191).

9181909100009 is a wasteful number, since it uses less digits than its factorization.

9181909100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009190.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 9181909100009 in words is "nine trillion, one hundred eighty-one billion, nine hundred nine million, one hundred thousand, nine".