164545943 has 4 divisors (see below), whose sum is σ = 164662680. Its totient is φ = 164429208.

The previous prime is 164545859. The next prime is 164545949. The reversal of 164545943 is 349545461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164545943 - 2¹⁴ = 164529559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164545943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164545949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56228 + ... + 59081.

It is an arithmetic number, because the mean of its divisors is an integer number (41165670).

Almost surely, 2^164545943 is an apocalyptic number.

164545943 is a deficient number, since it is larger than the sum of its proper divisors (116737).

164545943 is a wasteful number, since it uses less digits than its factorization.

164545943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116736.

The product of its digits is 259200, while the sum is 41.

The square root of 164545943 is about 12827.5462579560. The cubic root of 164545943 is about 547.9770789337.

The spelling of 164545943 in words is "one hundred sixty-four million, five hundred forty-five thousand, nine hundred forty-three".