164686453 has 2 divisors, whose sum is σ = 164686454. Its totient is φ = 164686452.

The previous prime is 164686451. The next prime is 164686499. The reversal of 164686453 is 354686461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154330929 + 10355524 = 12423^2 + 3218^2 .

It is an emirp because it is prime and its reverse (354686461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164686453 - 2¹ = 164686451 is a prime.

Together with 164686451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164686451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82343226 + 82343227.

It is an arithmetic number, because the mean of its divisors is an integer number (82343227).

Almost surely, 2^164686453 is an apocalyptic number.

It is an amenable number.

164686453 is a deficient number, since it is larger than the sum of its proper divisors (1).

164686453 is an equidigital number, since it uses as much as digits as its factorization.

164686453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 43.

The square root of 164686453 is about 12833.0219745779. The cubic root of 164686453 is about 548.1330117834.

The spelling of 164686453 in words is "one hundred sixty-four million, six hundred eighty-six thousand, four hundred fifty-three".