164193847 has 2 divisors, whose sum is σ = 164193848. Its totient is φ = 164193846.

The previous prime is 164193817. The next prime is 164193851. The reversal of 164193847 is 748391461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164193847 - 2¹⁹ = 163669559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164193817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82096923 + 82096924.

It is an arithmetic number, because the mean of its divisors is an integer number (82096924).

Almost surely, 2^164193847 is an apocalyptic number.

164193847 is a deficient number, since it is larger than the sum of its proper divisors (1).

164193847 is an equidigital number, since it uses as much as digits as its factorization.

164193847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 164193847 is about 12813.8146935251. The cubic root of 164193847 is about 547.5859453771.

The spelling of 164193847 in words is "one hundred sixty-four million, one hundred ninety-three thousand, eight hundred forty-seven".