164350393 has 2 divisors, whose sum is σ = 164350394. Its totient is φ = 164350392.

The previous prime is 164350391. The next prime is 164350421. The reversal of 164350393 is 393053461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159567424 + 4782969 = 12632^2 + 2187^2 .

It is an emirp because it is prime and its reverse (393053461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164350393 - 2¹ = 164350391 is a prime.

It is a super-2 number, since 2×164350393² = 54022103358508898, which contains 22 as substring.

Together with 164350391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (164350391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82175196 + 82175197.

It is an arithmetic number, because the mean of its divisors is an integer number (82175197).

Almost surely, 2^164350393 is an apocalyptic number.

It is an amenable number.

164350393 is a deficient number, since it is larger than the sum of its proper divisors (1).

164350393 is an equidigital number, since it uses as much as digits as its factorization.

164350393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 164350393 is about 12819.9217236300. The cubic root of 164350393 is about 547.7599168996.

The spelling of 164350393 in words is "one hundred sixty-four million, three hundred fifty thousand, three hundred ninety-three".