164516461 has 2 divisors, whose sum is σ = 164516462. Its totient is φ = 164516460.

The previous prime is 164516453. The next prime is 164516503. The reversal of 164516461 is 164615461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125216100 + 39300361 = 11190^2 + 6269^2 .

It is an emirp because it is prime and its reverse (164615461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164516461 - 2³ = 164516453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164516761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82258230 + 82258231.

It is an arithmetic number, because the mean of its divisors is an integer number (82258231).

Almost surely, 2^164516461 is an apocalyptic number.

It is an amenable number.

164516461 is a deficient number, since it is larger than the sum of its proper divisors (1).

164516461 is an equidigital number, since it uses as much as digits as its factorization.

164516461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 164516461 is about 12826.3970389194. The cubic root of 164516461 is about 547.9443496243.

The spelling of 164516461 in words is "one hundred sixty-four million, five hundred sixteen thousand, four hundred sixty-one".