5458181818549 has 2 divisors, whose sum is σ = 5458181818550. Its totient is φ = 5458181818548.

The previous prime is 5458181818543. The next prime is 5458181818591. The reversal of 5458181818549 is 9458181818545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2913336922500 + 2544844896049 = 1706850^2 + 1595257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5458181818549 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5458181818543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2729090909274 + 2729090909275.

It is an arithmetic number, because the mean of its divisors is an integer number (2729090909275).

Almost surely, 2^{5458181818549} is an apocalyptic number.

It is an amenable number.

5458181818549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5458181818549 is an equidigital number, since it uses as much as digits as its factorization.

5458181818549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728000, while the sum is 67.

The spelling of 5458181818549 in words is "five trillion, four hundred fifty-eight billion, one hundred eighty-one million, eight hundred eighteen thousand, five hundred forty-nine".