9101999109 has 16 divisors (see below), whose sum is σ = 13930286720. Its totient is φ = 5178427200.

The previous prime is 9101999099. The next prime is 9101999113. The reversal of 9101999109 is 9019991019.

It is not a de Polignac number, because 9101999109 - 2⁷ = 9101998981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9101999009) 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, 941542 + ... + 951159.

It is an arithmetic number, because the mean of its divisors is an integer number (870642920).

Almost surely, 2^9101999109 is an apocalyptic number.

It is an amenable number.

9101999109 is a deficient number, since it is larger than the sum of its proper divisors (4828287611).

9101999109 is a wasteful number, since it uses less digits than its factorization.

9101999109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892940.

The product of its (nonzero) digits is 59049, while the sum is 48.

The square root of 9101999109 is about 95404.3977445484. The cubic root of 9101999109 is about 2087.9123487431.

The spelling of 9101999109 in words is "nine billion, one hundred one million, nine hundred ninety-nine thousand, one hundred nine".