164426461 has 2 divisors, whose sum is σ = 164426462. Its totient is φ = 164426460.

The previous prime is 164426443. The next prime is 164426473. The reversal of 164426461 is 164624461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123543225 + 40883236 = 11115^2 + 6394^2 .

It is a cyclic number.

It is not a de Polignac number, because 164426461 - 2⁵ = 164426429 is a prime.

It is a super-3 number, since 3×164426461³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164426401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82213230 + 82213231.

It is an arithmetic number, because the mean of its divisors is an integer number (82213231).

Almost surely, 2^164426461 is an apocalyptic number.

It is an amenable number.

164426461 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426461 is an equidigital number, since it uses as much as digits as its factorization.

164426461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 34.

The square root of 164426461 is about 12822.8881692074. Note that the first 3 decimals coincide. The cubic root of 164426461 is about 547.8444123362.

The spelling of 164426461 in words is "one hundred sixty-four million, four hundred twenty-six thousand, four hundred sixty-one".