545819369 has 2 divisors, whose sum is σ = 545819370. Its totient is φ = 545819368.

The previous prime is 545819303. The next prime is 545819377. The reversal of 545819369 is 963918545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392554969 + 153264400 = 19813^2 + 12380^2 .

It is a cyclic number.

It is not a de Polignac number, because 545819369 - 2²⁴ = 529042153 is a prime.

It is a super-2 number, since 2×545819369² = 595837567151116322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545813369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272909684 + 272909685.

It is an arithmetic number, because the mean of its divisors is an integer number (272909685).

Almost surely, 2^545819369 is an apocalyptic number.

It is an amenable number.

545819369 is a deficient number, since it is larger than the sum of its proper divisors (1).

545819369 is an equidigital number, since it uses as much as digits as its factorization.

545819369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 545819369 is about 23362.7774247841. Note that the first 3 decimals coincide. The cubic root of 545819369 is about 817.2400612527.

The spelling of 545819369 in words is "five hundred forty-five million, eight hundred nineteen thousand, three hundred sixty-nine".