164612237 has 2 divisors, whose sum is σ = 164612238. Its totient is φ = 164612236.

The previous prime is 164612179. The next prime is 164612243. The reversal of 164612237 is 732216461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138744841 + 25867396 = 11779^2 + 5086^2 .

It is an emirp because it is prime and its reverse (732216461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164612237 - 2⁸ = 164611981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164612267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82306118 + 82306119.

It is an arithmetic number, because the mean of its divisors is an integer number (82306119).

Almost surely, 2^164612237 is an apocalyptic number.

It is an amenable number.

164612237 is a deficient number, since it is larger than the sum of its proper divisors (1).

164612237 is an equidigital number, since it uses as much as digits as its factorization.

164612237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 164612237 is about 12830.1300461063. The cubic root of 164612237 is about 548.0506606423.

Adding to 164612237 its reverse (732216461), we get a palindrome (896828698).

The spelling of 164612237 in words is "one hundred sixty-four million, six hundred twelve thousand, two hundred thirty-seven".