280974013 has 2 divisors, whose sum is σ = 280974014. Its totient is φ = 280974012.

The previous prime is 280973999. The next prime is 280974019. The reversal of 280974013 is 310479082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154703844 + 126270169 = 12438^2 + 11237^2 .

It is a cyclic number.

It is not a de Polignac number, because 280974013 - 2⁵ = 280973981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280974013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280974019) 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, 140487006 + 140487007.

It is an arithmetic number, because the mean of its divisors is an integer number (140487007).

Almost surely, 2^280974013 is an apocalyptic number.

It is an amenable number.

280974013 is a deficient number, since it is larger than the sum of its proper divisors (1).

280974013 is an equidigital number, since it uses as much as digits as its factorization.

280974013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 280974013 is about 16762.2794690937. The cubic root of 280974013 is about 654.9709701020.

The spelling of 280974013 in words is "two hundred eighty million, nine hundred seventy-four thousand, thirteen".