164774273 has 2 divisors, whose sum is σ = 164774274. Its totient is φ = 164774272.

The previous prime is 164774257. The next prime is 164774279. The reversal of 164774273 is 372477461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114746944 + 50027329 = 10712^2 + 7073^2 .

It is a cyclic number.

It is not a de Polignac number, because 164774273 - 2⁴ = 164774257 is a prime.

It is a super-2 number, since 2×164774273² = 54301122085357058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164774273.

It is not a weakly prime, because it can be changed into another prime (164774279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82387136 + 82387137.

It is an arithmetic number, because the mean of its divisors is an integer number (82387137).

Almost surely, 2^164774273 is an apocalyptic number.

It is an amenable number.

164774273 is a deficient number, since it is larger than the sum of its proper divisors (1).

164774273 is an equidigital number, since it uses as much as digits as its factorization.

164774273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 41.

The square root of 164774273 is about 12836.4431600035. The cubic root of 164774273 is about 548.2304261655.

The spelling of 164774273 in words is "one hundred sixty-four million, seven hundred seventy-four thousand, two hundred seventy-three".