164205427 has 2 divisors, whose sum is σ = 164205428. Its totient is φ = 164205426.

The previous prime is 164205421. The next prime is 164205469. The reversal of 164205427 is 724502461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164205427 - 2⁷ = 164205299 is a prime.

It is not a weakly prime, because it can be changed into another prime (164205421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82102713 + 82102714.

It is an arithmetic number, because the mean of its divisors is an integer number (82102714).

Almost surely, 2^164205427 is an apocalyptic number.

164205427 is a deficient number, since it is larger than the sum of its proper divisors (1).

164205427 is an equidigital number, since it uses as much as digits as its factorization.

164205427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 164205427 is about 12814.2665416324. The cubic root of 164205427 is about 547.5988181620.

Adding to 164205427 its reverse (724502461), we get a palindrome (888707888).

The spelling of 164205427 in words is "one hundred sixty-four million, two hundred five thousand, four hundred twenty-seven".