4557994549 has 2 divisors, whose sum is σ = 4557994550. Its totient is φ = 4557994548.

The previous prime is 4557994543. The next prime is 4557994613. The reversal of 4557994549 is 9454997554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4552200900 + 5793649 = 67470^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 4557994549 - 2⁷ = 4557994421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4557994543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278997274 + 2278997275.

It is an arithmetic number, because the mean of its divisors is an integer number (2278997275).

Almost surely, 2^4557994549 is an apocalyptic number.

It is an amenable number.

4557994549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4557994549 is an equidigital number, since it uses as much as digits as its factorization.

4557994549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824000, while the sum is 61.

The square root of 4557994549 is about 67512.9213484352. The cubic root of 4557994549 is about 1658.0257349927.

The spelling of 4557994549 in words is "four billion, five hundred fifty-seven million, nine hundred ninety-four thousand, five hundred forty-nine".