164317847 has 2 divisors, whose sum is σ = 164317848. Its totient is φ = 164317846.

The previous prime is 164317823. The next prime is 164317849. The reversal of 164317847 is 748713461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164317847 - 2²² = 160123543 is a prime.

Together with 164317849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164317849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82158923 + 82158924.

It is an arithmetic number, because the mean of its divisors is an integer number (82158924).

Almost surely, 2^164317847 is an apocalyptic number.

164317847 is a deficient number, since it is larger than the sum of its proper divisors (1).

164317847 is an equidigital number, since it uses as much as digits as its factorization.

164317847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 164317847 is about 12818.6523082577. The cubic root of 164317847 is about 547.7237572230.

The spelling of 164317847 in words is "one hundred sixty-four million, three hundred seventeen thousand, eight hundred forty-seven".