8109418 has 4 divisors (see below), whose sum is σ = 12164130. Its totient is φ = 4054708.

The previous prime is 8109397. The next prime is 8109419. The reversal of 8109418 is 8149018.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7601049 + 508369 = 2757^2 + 713^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8109418.

It is not an unprimeable number, because it can be changed into a prime (8109419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027353 + ... + 2027356.

Almost surely, 2^8109418 is an apocalyptic number.

8109418 is a deficient number, since it is larger than the sum of its proper divisors (4054712).

8109418 is a wasteful number, since it uses less digits than its factorization.

8109418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054711.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 8109418 is about 2847.7039874257. The cubic root of 8109418 is about 200.9076909206.

The spelling of 8109418 in words is "eight million, one hundred nine thousand, four hundred eighteen".