164426161 has 2 divisors, whose sum is σ = 164426162. Its totient is φ = 164426160.

The previous prime is 164426137. The next prime is 164426177. The reversal of 164426161 is 161624461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159390625 + 5035536 = 12625^2 + 2244^2 .

It is an emirp because it is prime and its reverse (161624461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164426161 - 2¹⁹ = 163901873 is a prime.

It is a super-3 number, since 3×164426161³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (164426461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82213080 + 82213081.

It is an arithmetic number, because the mean of its divisors is an integer number (82213081).

Almost surely, 2^164426161 is an apocalyptic number.

It is an amenable number.

164426161 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426161 is an equidigital number, since it uses as much as digits as its factorization.

164426161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 164426161 is about 12822.8764713694. The cubic root of 164426161 is about 547.8440791509.

The spelling of 164426161 in words is "one hundred sixty-four million, four hundred twenty-six thousand, one hundred sixty-one".