545618219 has 4 divisors (see below), whose sum is σ = 545958096. Its totient is φ = 545278344.

The previous prime is 545618207. The next prime is 545618233. The reversal of 545618219 is 912816545.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545618219 is a prime.

It is a super-2 number, since 2×545618219² = 595398481809463922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545618239) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 167519 + ... + 170744.

It is an arithmetic number, because the mean of its divisors is an integer number (136489524).

Almost surely, 2^545618219 is an apocalyptic number.

545618219 is a deficient number, since it is larger than the sum of its proper divisors (339877).

545618219 is a wasteful number, since it uses less digits than its factorization.

545618219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339876.

The product of its digits is 86400, while the sum is 41.

The square root of 545618219 is about 23358.4721032862. The cubic root of 545618219 is about 817.1396568297.

The spelling of 545618219 in words is "five hundred forty-five million, six hundred eighteen thousand, two hundred nineteen".