164309645 has 4 divisors (see below), whose sum is σ = 197171580. Its totient is φ = 131447712.

The previous prime is 164309627. The next prime is 164309647. The reversal of 164309645 is 546903461.

164309645 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.

It can be written as a sum of positive squares in 2 ways, for example, as 120604324 + 43705321 = 10982^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 164309645 - 2⁶ = 164309581 is a prime.

It is a super-3 number, since 3×164309645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164309599 and 164309608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164309647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16430960 + ... + 16430969.

It is an arithmetic number, because the mean of its divisors is an integer number (49292895).

Almost surely, 2^164309645 is an apocalyptic number.

It is an amenable number.

164309645 is a deficient number, since it is larger than the sum of its proper divisors (32861935).

164309645 is an equidigital number, since it uses as much as digits as its factorization.

164309645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32861934.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 164309645 is about 12818.3323798379. The cubic root of 164309645 is about 547.7146437780.

The spelling of 164309645 in words is "one hundred sixty-four million, three hundred nine thousand, six hundred forty-five".