549590443189 has 2 divisors, whose sum is σ = 549590443190. Its totient is φ = 549590443188.

The previous prime is 549590443169. The next prime is 549590443201. The reversal of 549590443189 is 981344095945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512345303089 + 37245140100 = 715783^2 + 192990^2 .

It is a cyclic number.

It is not a de Polignac number, because 549590443189 - 2²⁵ = 549556888757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549590443169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274795221594 + 274795221595.

It is an arithmetic number, because the mean of its divisors is an integer number (274795221595).

Almost surely, 2^549590443189 is an apocalyptic number.

It is an amenable number.

549590443189 is a deficient number, since it is larger than the sum of its proper divisors (1).

549590443189 is an equidigital number, since it uses as much as digits as its factorization.

549590443189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 549590443189 in words is "five hundred forty-nine billion, five hundred ninety million, four hundred forty-three thousand, one hundred eighty-nine".