164368397 has 2 divisors, whose sum is σ = 164368398.
Its totient is φ = 164368396.
The previous prime is 164368387. The next prime is 164368429. The reversal of 164368397 is 793863461.
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., 158482921 + 5885476 = 12589^2 + 2426^2
It is an emirp because it is prime and its reverse (793863461) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-164368397 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (164368357) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82184198 + 82184199.
It is an arithmetic number, because the mean of its divisors is an integer number (82184199).
Almost surely, 2164368397 is an apocalyptic number.
It is an amenable number.
164368397 is a deficient number, since it is larger than the sum of its proper divisors (1).
164368397 is an equidigital number, since it uses as much as digits as its factorization.
164368397 is an evil number, because the sum of its binary digits is even.
The product of its digits is 653184, while the sum is 47.
The square root of 164368397 is about 12820.6238927753.
The cubic root of 164368397 is about 547.7799178850.
The spelling of 164368397 in words is "one hundred sixty-four million, three hundred sixty-eight thousand, three hundred ninety-seven".