164364745 has 4 divisors (see below), whose sum is σ = 197237700. Its totient is φ = 131491792.

The previous prime is 164364719. The next prime is 164364803. The reversal of 164364745 is 547463461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547463461 = 17 ⋅32203733.

It can be written as a sum of positive squares in 2 ways, for example, as 101828281 + 62536464 = 10091^2 + 7908^2 .

It is a cyclic number.

It is not a de Polignac number, because 164364745 - 2¹¹ = 164362697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164364698 and 164364707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16436470 + ... + 16436479.

It is an arithmetic number, because the mean of its divisors is an integer number (49309425).

Almost surely, 2^164364745 is an apocalyptic number.

It is an amenable number.

164364745 is a deficient number, since it is larger than the sum of its proper divisors (32872955).

164364745 is an equidigital number, since it uses as much as digits as its factorization.

164364745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32872954.

The product of its digits is 241920, while the sum is 40.

The square root of 164364745 is about 12820.4814652181. The cubic root of 164364745 is about 547.7758609270.

The spelling of 164364745 in words is "one hundred sixty-four million, three hundred sixty-four thousand, seven hundred forty-five".