8194381319 has 8 divisors (see below), whose sum is σ = 8407875168. Its totient is φ = 7981536640.

The previous prime is 8194381297. The next prime is 8194381343. The reversal of 8194381319 is 9131834918.

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

It is a cyclic number.

It is not a de Polignac number, because 8194381319 - 2²⁰ = 8193332743 is a prime.

It is a super-2 number, since 2×8194381319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8194381369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136667 + ... + 187260.

It is an arithmetic number, because the mean of its divisors is an integer number (1050984396).

Almost surely, 2^8194381319 is an apocalyptic number.

8194381319 is a deficient number, since it is larger than the sum of its proper divisors (213493849).

8194381319 is a wasteful number, since it uses less digits than its factorization.

8194381319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324585.

The product of its digits is 186624, while the sum is 47.

The square root of 8194381319 is about 90522.8220892389. The cubic root of 8194381319 is about 2016.0689912424.

The spelling of 8194381319 in words is "eight billion, one hundred ninety-four million, three hundred eighty-one thousand, three hundred nineteen".