8194573278 has 16 divisors (see below), whose sum is σ = 18210162960. Its totient is φ = 2731524408.

The previous prime is 8194573237. The next prime is 8194573319. The reversal of 8194573278 is 8723754918.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8194573237) and next prime (8194573319).

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 151751357 = 8194573278 / (8 + 1 + 9 + 4 + 5 + 7 + 3 + 2 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75875625 + ... + 75875732.

It is an arithmetic number, because the mean of its divisors is an integer number (1138135185).

Almost surely, 2^8194573278 is an apocalyptic number.

8194573278 is an abundant number, since it is smaller than the sum of its proper divisors (10015589682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8194573278 is a wasteful number, since it uses less digits than its factorization.

8194573278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151751368 (or 151751362 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 8194573278 is about 90523.8823626119. The cubic root of 8194573278 is about 2016.0847337189.

The spelling of 8194573278 in words is "eight billion, one hundred ninety-four million, five hundred seventy-three thousand, two hundred seventy-eight".