8218250169 has 4 divisors (see below), whose sum is σ = 10957666896. Its totient is φ = 5478833444.

The previous prime is 8218250167. The next prime is 8218250179. The reversal of 8218250169 is 9610528128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8218250169 - 2¹ = 8218250167 is a prime.

It is a super-2 number, since 2×8218250169² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8218250169.

It is not an unprimeable number, because it can be changed into a prime (8218250167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369708359 + ... + 1369708364.

It is an arithmetic number, because the mean of its divisors is an integer number (2739416724).

Almost surely, 2^8218250169 is an apocalyptic number.

It is an amenable number.

8218250169 is a deficient number, since it is larger than the sum of its proper divisors (2739416727).

8218250169 is a wasteful number, since it uses less digits than its factorization.

8218250169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739416726.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 8218250169 is about 90654.5650753452. The cubic root of 8218250169 is about 2018.0245832880.

The spelling of 8218250169 in words is "eight billion, two hundred eighteen million, two hundred fifty thousand, one hundred sixty-nine".