8191011 has 8 divisors (see below), whose sum is σ = 10941184. Its totient is φ = 5450760.

The previous prime is 8190997. The next prime is 8191049. The reversal of 8191011 is 1101918.

8191011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8191011 - 2⁵ = 8190979 is a prime.

It is a super-2 number, since 2×8191011² = 134185322404242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8191091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (1367648).

Almost surely, 2^8191011 is an apocalyptic number.

8191011 is a deficient number, since it is larger than the sum of its proper divisors (2750173).

8191011 is a wasteful number, since it uses less digits than its factorization.

8191011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 8191011 is about 2861.9942347950. The cubic root of 8191011 is about 201.5792552744.

Adding to 8191011 its reverse (1101918), we get a palindrome (9292929).

It can be divided in two parts, 819 and 1011, that added together give a triangular number (1830 = T₆₀).

The spelling of 8191011 in words is "eight million, one hundred ninety-one thousand, eleven".