164434545 has 24 divisors (see below), whose sum is σ = 310931712. Its totient is φ = 79725600.

The previous prime is 164434507. The next prime is 164434561. The reversal of 164434545 is 545434461.

164434545 is a `hidden beast` number, since 1 + 644 + 3 + 4 + 5 + 4 + 5 = 666.

It is not a de Polignac number, because 164434545 - 2¹⁵ = 164401777 is a prime.

It is a super-3 number, since 3×164434545³ (a number of 26 digits) contains 333 as substring.

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 23 ways as a sum of consecutive naturals, for example, 165601 + ... + 166590.

It is an arithmetic number, because the mean of its divisors is an integer number (12955488).

Almost surely, 2^164434545 is an apocalyptic number.

164434545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164434545 is a deficient number, since it is larger than the sum of its proper divisors (146497167).

164434545 is a wasteful number, since it uses less digits than its factorization.

164434545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332213 (or 332210 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 164434545 is about 12823.2033829305. The cubic root of 164434545 is about 547.8533904159.

The spelling of 164434545 in words is "one hundred sixty-four million, four hundred thirty-four thousand, five hundred forty-five".