191116806 has 16 divisors (see below), whose sum is σ = 387618048. Its totient is φ = 62808200.

The previous prime is 191116789. The next prime is 191116823. The reversal of 191116806 is 608611191.

It is an interprime number because it is at equal distance from previous prime (191116789) and next prime (191116823).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223890 + ... + 224741.

It is an arithmetic number, because the mean of its divisors is an integer number (24226128).

Almost surely, 2^191116806 is an apocalyptic number.

191116806 is an abundant number, since it is smaller than the sum of its proper divisors (196501242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191116806 is a wasteful number, since it uses less digits than its factorization.

191116806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448707.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 191116806 is about 13824.5002079641. The cubic root of 191116806 is about 576.0138945819.

Adding to 191116806 its reverse (608611191), we get a palindrome (799727997).

The spelling of 191116806 in words is "one hundred ninety-one million, one hundred sixteen thousand, eight hundred six".