545619469 has 2 divisors, whose sum is σ = 545619470. Its totient is φ = 545619468.

The previous prime is 545619463. The next prime is 545619479. The reversal of 545619469 is 964916545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294808900 + 250810569 = 17170^2 + 15837^2 .

It is a cyclic number.

It is not a de Polignac number, because 545619469 - 2¹⁷ = 545488397 is a prime.

It is a super-2 number, since 2×545619469² = 595401209903683922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545619463) 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 as a sum of consecutive naturals, namely, 272809734 + 272809735.

It is an arithmetic number, because the mean of its divisors is an integer number (272809735).

Almost surely, 2^545619469 is an apocalyptic number.

It is an amenable number.

545619469 is a deficient number, since it is larger than the sum of its proper divisors (1).

545619469 is an equidigital number, since it uses as much as digits as its factorization.

545619469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The square root of 545619469 is about 23358.4988601579. The cubic root of 545619469 is about 817.1402808459.

The spelling of 545619469 in words is "five hundred forty-five million, six hundred nineteen thousand, four hundred sixty-nine".