1013254549 has 2 divisors, whose sum is σ = 1013254550. Its totient is φ = 1013254548.

The previous prime is 1013254547. The next prime is 1013254559. The reversal of 1013254549 is 9454523101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1002165649 + 11088900 = 31657^2 + 3330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013254549 - 2¹ = 1013254547 is a prime.

Together with 1013254547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013254547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506627274 + 506627275.

It is an arithmetic number, because the mean of its divisors is an integer number (506627275).

Almost surely, 2^1013254549 is an apocalyptic number.

It is an amenable number.

1013254549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013254549 is an equidigital number, since it uses as much as digits as its factorization.

1013254549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1013254549 is about 31831.6595388930. The cubic root of 1013254549 is about 1004.3988051418.

The spelling of 1013254549 in words is "one billion, thirteen million, two hundred fifty-four thousand, five hundred forty-nine".