164166365 has 32 divisors (see below), whose sum is σ = 239552640. Its totient is φ = 106444800.

The previous prime is 164166313. The next prime is 164166383. The reversal of 164166365 is 563661461.

It is not a de Polignac number, because 164166365 - 2¹⁰ = 164165341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13145 + ... + 22385.

It is an arithmetic number, because the mean of its divisors is an integer number (7486020).

Almost surely, 2^164166365 is an apocalyptic number.

It is an amenable number.

164166365 is a deficient number, since it is larger than the sum of its proper divisors (75386275).

164166365 is a wasteful number, since it uses less digits than its factorization.

164166365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293.

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

The square root of 164166365 is about 12812.7422903920. The cubic root of 164166365 is about 547.5553928790. Note that the first 3 decimals are identical.

The spelling of 164166365 in words is "one hundred sixty-four million, one hundred sixty-six thousand, three hundred sixty-five".