19650713 has 2 divisors, whose sum is σ = 19650714. Its totient is φ = 19650712.

The previous prime is 19650707. The next prime is 19650733. The reversal of 19650713 is 31705691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 8111104 = 3397^2 + 2848^2 .

It is an emirp because it is prime and its reverse (31705691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19650713 - 2¹⁰ = 19649689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19650713.

It is not a weakly prime, because it can be changed into another prime (19650703) 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, 9825356 + 9825357.

It is an arithmetic number, because the mean of its divisors is an integer number (9825357).

Almost surely, 2^19650713 is an apocalyptic number.

It is an amenable number.

19650713 is a deficient number, since it is larger than the sum of its proper divisors (1).

19650713 is an equidigital number, since it uses as much as digits as its factorization.

19650713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 19650713 is about 4432.9124737581. The cubic root of 19650713 is about 269.8522877453.

The spelling of 19650713 in words is "nineteen million, six hundred fifty thousand, seven hundred thirteen".