8162931947 has 2 divisors, whose sum is σ = 8162931948. Its totient is φ = 8162931946.

The previous prime is 8162931923. The next prime is 8162931949. The reversal of 8162931947 is 7491392618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8162931947 - 2³² = 3867964651 is a prime.

Together with 8162931949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8162931895 and 8162931904.

It is not a weakly prime, because it can be changed into another prime (8162931949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081465973 + 4081465974.

It is an arithmetic number, because the mean of its divisors is an integer number (4081465974).

Almost surely, 2^8162931947 is an apocalyptic number.

8162931947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8162931947 is an equidigital number, since it uses as much as digits as its factorization.

8162931947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 8162931947 is about 90348.9454670059. The cubic root of 8162931947 is about 2013.4865147919.

The spelling of 8162931947 in words is "eight billion, one hundred sixty-two million, nine hundred thirty-one thousand, nine hundred forty-seven".