4545454549 has 2 divisors, whose sum is σ = 4545454550. Its totient is φ = 4545454548.

The previous prime is 4545454541. The next prime is 4545454561. The reversal of 4545454549 is 9454545454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3330444100 + 1215010449 = 57710^2 + 34857^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545454549 - 2³ = 4545454541 is a prime.

It is a super-2 number, since 2×4545454549² = 41322314114049586802, which contains 22 as substring.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545454541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272727274 + 2272727275.

It is an arithmetic number, because the mean of its divisors is an integer number (2272727275).

Almost surely, 2^4545454549 is an apocalyptic number.

It is an amenable number.

4545454549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545454549 is an equidigital number, since it uses as much as digits as its factorization.

4545454549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760000, while the sum is 49.

The square root of 4545454549 is about 67419.9862726180. The cubic root of 4545454549 is about 1656.5038127905.

The spelling of 4545454549 in words is "four billion, five hundred forty-five million, four hundred fifty-four thousand, five hundred forty-nine".