8168312907 has 24 divisors (see below), whose sum is σ = 11880872640. Its totient is φ = 5407689840.

The previous prime is 8168312903. The next prime is 8168312917. The reversal of 8168312907 is 7092138618.

It is not a de Polignac number, because 8168312907 - 2² = 8168312903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8168312903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1329232 + ... + 1335362.

It is an arithmetic number, because the mean of its divisors is an integer number (495036360).

Almost surely, 2^8168312907 is an apocalyptic number.

8168312907 is a deficient number, since it is larger than the sum of its proper divisors (3712559733).

8168312907 is a wasteful number, since it uses less digits than its factorization.

8168312907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143 (or 7140 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8168312907 is about 90378.7193259564. The cubic root of 8168312907 is about 2013.9288440375.

The spelling of 8168312907 in words is "eight billion, one hundred sixty-eight million, three hundred twelve thousand, nine hundred seven".