9190919191909 has 16 divisors (see below), whose sum is σ = 11312091535360. Its totient is φ = 7271813283840.

The previous prime is 9190919191901. The next prime is 9190919191933. The reversal of 9190919191909 is 9091919190919.

It is not a de Polignac number, because 9190919191909 - 2³ = 9190919191901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9190919191901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4769212 + ... + 6413050.

It is an arithmetic number, because the mean of its divisors is an integer number (707005720960).

Almost surely, 2^{9190919191909} is an apocalyptic number.

It is an amenable number.

9190919191909 is a deficient number, since it is larger than the sum of its proper divisors (2121172343451).

9190919191909 is a wasteful number, since it uses less digits than its factorization.

9190919191909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705300.

The product of its (nonzero) digits is 4782969, while the sum is 67.

The spelling of 9190919191909 in words is "nine trillion, one hundred ninety billion, nine hundred nineteen million, one hundred ninety-one thousand, nine hundred nine".