19830073 has 2 divisors, whose sum is σ = 19830074. Its totient is φ = 19830072.

The previous prime is 19830067. The next prime is 19830079. The reversal of 19830073 is 37003891.

It is a balanced prime because it is at equal distance from previous prime (19830067) and next prime (19830079).

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 45369 = 4448^2 + 213^2 .

It is an emirp because it is prime and its reverse (37003891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19830073 is a prime.

It is a super-3 number, since 3×19830073³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (19830079) 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, 9915036 + 9915037.

It is an arithmetic number, because the mean of its divisors is an integer number (9915037).

Almost surely, 2^19830073 is an apocalyptic number.

It is an amenable number.

19830073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19830073 is an equidigital number, since it uses as much as digits as its factorization.

19830073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 19830073 is about 4453.0970121928. The cubic root of 19830073 is about 270.6708193838.

The spelling of 19830073 in words is "nineteen million, eight hundred thirty thousand, seventy-three".