164149273 has 2 divisors, whose sum is σ = 164149274. Its totient is φ = 164149272.

The previous prime is 164149207. The next prime is 164149289. The reversal of 164149273 is 372941461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156950784 + 7198489 = 12528^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 164149273 - 2¹⁷ = 164018201 is a prime.

It is not a weakly prime, because it can be changed into another prime (164146273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82074636 + 82074637.

It is an arithmetic number, because the mean of its divisors is an integer number (82074637).

Almost surely, 2^164149273 is an apocalyptic number.

It is an amenable number.

164149273 is a deficient number, since it is larger than the sum of its proper divisors (1).

164149273 is an equidigital number, since it uses as much as digits as its factorization.

164149273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 164149273 is about 12812.0752807654. The cubic root of 164149273 is about 547.5363895109.

The spelling of 164149273 in words is "one hundred sixty-four million, one hundred forty-nine thousand, two hundred seventy-three".