19730983 has 4 divisors (see below), whose sum is σ = 19740240. Its totient is φ = 19721728.

The previous prime is 19730981. The next prime is 19730993. The reversal of 19730983 is 38903791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 19730983 - 2¹ = 19730981 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19730981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366 + ... + 6292.

It is an arithmetic number, because the mean of its divisors is an integer number (4935060).

Almost surely, 2^19730983 is an apocalyptic number.

19730983 is a deficient number, since it is larger than the sum of its proper divisors (9257).

19730983 is an equidigital number, since it uses as much as digits as its factorization.

19730983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9256.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 19730983 is about 4441.9571137056. The cubic root of 19730983 is about 270.2192229626.

The spelling of 19730983 in words is "nineteen million, seven hundred thirty thousand, nine hundred eighty-three".