19620983 has 2 divisors, whose sum is σ = 19620984. Its totient is φ = 19620982.

The previous prime is 19620947. The next prime is 19621027. The reversal of 19620983 is 38902691.

It is a weak prime.

It is an emirp because it is prime and its reverse (38902691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19620983 - 2¹⁰ = 19619959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19620383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9810491 + 9810492.

It is an arithmetic number, because the mean of its divisors is an integer number (9810492).

Almost surely, 2^19620983 is an apocalyptic number.

19620983 is a deficient number, since it is larger than the sum of its proper divisors (1).

19620983 is an equidigital number, since it uses as much as digits as its factorization.

19620983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 19620983 is about 4429.5578786150. The cubic root of 19620983 is about 269.7161305513.

The spelling of 19620983 in words is "nineteen million, six hundred twenty thousand, nine hundred eighty-three".