8194603378 has 8 divisors (see below), whose sum is σ = 13237436268. Its totient is φ = 3782124624.

The previous prime is 8194603349. The next prime is 8194603409. The reversal of 8194603378 is 8733064918.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7140757009 + 1053846369 = 84503^2 + 32463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 157588501 + ... + 157588552.

Almost surely, 2^8194603378 is an apocalyptic number.

8194603378 is a deficient number, since it is larger than the sum of its proper divisors (5042832890).

8194603378 is a wasteful number, since it uses less digits than its factorization.

8194603378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315177068.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 8194603378 is about 90524.0486169283. The cubic root of 8194603378 is about 2016.0872021849.

The spelling of 8194603378 in words is "eight billion, one hundred ninety-four million, six hundred three thousand, three hundred seventy-eight".