9190919100091 has 4 divisors (see below), whose sum is σ = 9263288541952. Its totient is φ = 9118549658232.

The previous prime is 9190919100089. The next prime is 9190919100101. The reversal of 9190919100091 is 1900019190919.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9190919100091 - 2¹ = 9190919100089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9190919100491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36184720740 + ... + 36184720993.

It is an arithmetic number, because the mean of its divisors is an integer number (2315822135488).

Almost surely, 2^{9190919100091} is an apocalyptic number.

9190919100091 is a deficient number, since it is larger than the sum of its proper divisors (72369441861).

9190919100091 is a wasteful number, since it uses less digits than its factorization.

9190919100091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72369441860.

The product of its (nonzero) digits is 59049, while the sum is 49.

The spelling of 9190919100091 in words is "nine trillion, one hundred ninety billion, nine hundred nineteen million, one hundred thousand, ninety-one".