8190811 has 4 divisors (see below), whose sum is σ = 8209192. Its totient is φ = 8172432.

The previous prime is 8190761. The next prime is 8190823. The reversal of 8190811 is 1180918.

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 8190811 - 2¹³ = 8182619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8190811.

It is not an unprimeable number, because it can be changed into a prime (8190011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8505 + ... + 9418.

It is an arithmetic number, because the mean of its divisors is an integer number (2052298).

Almost surely, 2^8190811 is an apocalyptic number.

8190811 is a deficient number, since it is larger than the sum of its proper divisors (18381).

8190811 is a wasteful number, since it uses less digits than its factorization.

8190811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 8190811 is about 2861.9592939104. The cubic root of 8190811 is about 201.5776146068.

The spelling of 8190811 in words is "eight million, one hundred ninety thousand, eight hundred eleven".