164322461 has 2 divisors, whose sum is σ = 164322462. Its totient is φ = 164322460.

The previous prime is 164322437. The next prime is 164322463. The reversal of 164322461 is 164223461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 37332100 = 11269^2 + 6110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164322461 is a prime.

Together with 164322463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164322463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82161230 + 82161231.

It is an arithmetic number, because the mean of its divisors is an integer number (82161231).

Almost surely, 2^164322461 is an apocalyptic number.

It is an amenable number.

164322461 is a deficient number, since it is larger than the sum of its proper divisors (1).

164322461 is an equidigital number, since it uses as much as digits as its factorization.

164322461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 164322461 is about 12818.8322791119. The cubic root of 164322461 is about 547.7288838193.

The spelling of 164322461 in words is "one hundred sixty-four million, three hundred twenty-two thousand, four hundred sixty-one".