164542265 has 16 divisors (see below), whose sum is σ = 204456960. Its totient is φ = 126989760.

The previous prime is 164542249. The next prime is 164542267. The reversal of 164542265 is 562245461.

It is not a de Polignac number, because 164542265 - 2⁴ = 164542249 is a prime.

It is a super-3 number, since 3×164542265³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164542267) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 54167 + ... + 57123.

It is an arithmetic number, because the mean of its divisors is an integer number (12778560).

Almost surely, 2^164542265 is an apocalyptic number.

It is an amenable number.

164542265 is a deficient number, since it is larger than the sum of its proper divisors (39914695).

164542265 is a wasteful number, since it uses less digits than its factorization.

164542265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352.

The product of its digits is 57600, while the sum is 35.

The square root of 164542265 is about 12827.4028938051. The cubic root of 164542265 is about 547.9729960320.

The spelling of 164542265 in words is "one hundred sixty-four million, five hundred forty-two thousand, two hundred sixty-five".