8218195 has 4 divisors (see below), whose sum is σ = 9861840. Its totient is φ = 6574552.

The previous prime is 8218187. The next prime is 8218201. The reversal of 8218195 is 5918128.

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 8218195 - 2³ = 8218187 is a prime.

8218195 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8218195.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821815 + ... + 821824.

It is an arithmetic number, because the mean of its divisors is an integer number (2465460).

Almost surely, 2^8218195 is an apocalyptic number.

8218195 is a deficient number, since it is larger than the sum of its proper divisors (1643645).

8218195 is a wasteful number, since it uses less digits than its factorization.

8218195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643644.

The product of its digits is 5760, while the sum is 34.

The square root of 8218195 is about 2866.7394370609. The cubic root of 8218195 is about 201.8020067621.

The spelling of 8218195 in words is "eight million, two hundred eighteen thousand, one hundred ninety-five".