164165775 has 12 divisors (see below), whose sum is σ = 271420872. Its totient is φ = 87555040.

The previous prime is 164165773. The next prime is 164165779. The reversal of 164165775 is 577561461.

It is not a de Polignac number, because 164165775 - 2¹ = 164165773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164165773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1094364 + ... + 1094513.

It is an arithmetic number, because the mean of its divisors is an integer number (22618406).

Almost surely, 2^164165775 is an apocalyptic number.

164165775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164165775 is a deficient number, since it is larger than the sum of its proper divisors (107255097).

164165775 is a wasteful number, since it uses less digits than its factorization.

164165775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188890 (or 2188885 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 164165775 is about 12812.7192664165. The cubic root of 164165775 is about 547.5547369223.

The spelling of 164165775 in words is "one hundred sixty-four million, one hundred sixty-five thousand, seven hundred seventy-five".