164300261 has 2 divisors, whose sum is σ = 164300262. Its totient is φ = 164300260.

The previous prime is 164300237. The next prime is 164300263. The reversal of 164300261 is 162003461.

It is a happy number.

164300261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156000100 + 8300161 = 12490^2 + 2881^2 .

It is an emirp because it is prime and its reverse (162003461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164300261 - 2⁶ = 164300197 is a prime.

It is a Sophie Germain prime.

Together with 164300263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164300263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82150130 + 82150131.

It is an arithmetic number, because the mean of its divisors is an integer number (82150131).

Almost surely, 2^164300261 is an apocalyptic number.

It is an amenable number.

164300261 is a deficient number, since it is larger than the sum of its proper divisors (1).

164300261 is an equidigital number, since it uses as much as digits as its factorization.

164300261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 164300261 is about 12817.9663363577. The cubic root of 164300261 is about 547.7042166115.

The spelling of 164300261 in words is "one hundred sixty-four million, three hundred thousand, two hundred sixty-one".