164434522909 has 4 divisors (see below), whose sum is σ = 171583850016. Its totient is φ = 157285195804.

The previous prime is 164434522907. The next prime is 164434522943. The reversal of 164434522909 is 909225434461.

164434522909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 909225434461 = 457 ⋅1989552373.

It is a cyclic number.

It is not a de Polignac number, because 164434522909 - 2¹ = 164434522907 is a prime.

It is a super-3 number, since 3×164434522909³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164434522907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574663519 + ... + 3574663564.

It is an arithmetic number, because the mean of its divisors is an integer number (42895962504).

Almost surely, 2^164434522909 is an apocalyptic number.

It is an amenable number.

164434522909 is a deficient number, since it is larger than the sum of its proper divisors (7149327107).

164434522909 is an equidigital number, since it uses as much as digits as its factorization.

164434522909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7149327106.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 164434522909 in words is "one hundred sixty-four billion, four hundred thirty-four million, five hundred twenty-two thousand, nine hundred nine".