8171315394 has 32 divisors (see below), whose sum is σ = 18310176576. Its totient is φ = 2409232320.

The previous prime is 8171315381. The next prime is 8171315423. The reversal of 8171315394 is 4935131718.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1670637 + ... + 1675520.

It is an arithmetic number, because the mean of its divisors is an integer number (572193018).

Almost surely, 2^8171315394 is an apocalyptic number.

8171315394 is an abundant number, since it is smaller than the sum of its proper divisors (10138861182).

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

8171315394 is a wasteful number, since it uses less digits than its factorization.

8171315394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346210.

The product of its digits is 90720, while the sum is 42.

The square root of 8171315394 is about 90395.3283859293. The cubic root of 8171315394 is about 2014.1755720341.

The spelling of 8171315394 in words is "eight billion, one hundred seventy-one million, three hundred fifteen thousand, three hundred ninety-four".