1013549549 has 2 divisors, whose sum is σ = 1013549550. Its totient is φ = 1013549548.

The previous prime is 1013549531. The next prime is 1013549569. The reversal of 1013549549 is 9459453101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624750025 + 388799524 = 24995^2 + 19718^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013549549 - 2⁸ = 1013549293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013549569) 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, 506774774 + 506774775.

It is an arithmetic number, because the mean of its divisors is an integer number (506774775).

Almost surely, 2^1013549549 is an apocalyptic number.

It is an amenable number.

1013549549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013549549 is an equidigital number, since it uses as much as digits as its factorization.

1013549549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1013549549 is about 31836.2929531690. The cubic root of 1013549549 is about 1004.4962695936.

The spelling of 1013549549 in words is "one billion, thirteen million, five hundred forty-nine thousand, five hundred forty-nine".