19950013 has 2 divisors, whose sum is σ = 19950014. Its totient is φ = 19950012.

The previous prime is 19949977. The next prime is 19950017. The reversal of 19950013 is 31005991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19740249 + 209764 = 4443^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 19950013 - 2¹⁷ = 19818941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19950017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9975006 + 9975007.

It is an arithmetic number, because the mean of its divisors is an integer number (9975007).

Almost surely, 2^19950013 is an apocalyptic number.

It is an amenable number.

19950013 is a deficient number, since it is larger than the sum of its proper divisors (1).

19950013 is an equidigital number, since it uses as much as digits as its factorization.

19950013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 19950013 is about 4466.5437420896. The cubic root of 19950013 is about 271.2154303386.

The spelling of 19950013 in words is "nineteen million, nine hundred fifty thousand, thirteen".