8194378 has 4 divisors (see below), whose sum is σ = 12291570. Its totient is φ = 4097188.

The previous prime is 8194369. The next prime is 8194387. The reversal of 8194378 is 8734918.

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

It is an interprime number because it is at equal distance from previous prime (8194369) and next prime (8194387).

It can be written as a sum of positive squares in only one way, i.e., 4782969 + 3411409 = 2187^2 + 1847^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8194378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2048593 + ... + 2048596.

Almost surely, 2^8194378 is an apocalyptic number.

8194378 is a deficient number, since it is larger than the sum of its proper divisors (4097192).

8194378 is a wasteful number, since it uses less digits than its factorization.

8194378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097191.

The product of its digits is 48384, while the sum is 40.

The square root of 8194378 is about 2862.5824005607. The cubic root of 8194378 is about 201.6068719050.

The spelling of 8194378 in words is "eight million, one hundred ninety-four thousand, three hundred seventy-eight".