164432045 has 4 divisors (see below), whose sum is σ = 197318460. Its totient is φ = 131545632.

The previous prime is 164432011. The next prime is 164432069. The reversal of 164432045 is 540234461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540234461 = 13 ⋅41556497.

It can be written as a sum of positive squares in 2 ways, for example, as 89453764 + 74978281 = 9458^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 164432045 - 2⁸ = 164431789 is a prime.

It is a super-3 number, since 3×164432045³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 164431999 and 164432017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16443200 + ... + 16443209.

It is an arithmetic number, because the mean of its divisors is an integer number (49329615).

Almost surely, 2^164432045 is an apocalyptic number.

It is an amenable number.

164432045 is a deficient number, since it is larger than the sum of its proper divisors (32886415).

164432045 is an equidigital number, since it uses as much as digits as its factorization.

164432045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32886414.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 164432045 is about 12823.1059030174. The cubic root of 164432045 is about 547.8506139507.

The spelling of 164432045 in words is "one hundred sixty-four million, four hundred thirty-two thousand, forty-five".