19718483 has 2 divisors, whose sum is σ = 19718484. Its totient is φ = 19718482.

The previous prime is 19718473. The next prime is 19718497. The reversal of 19718483 is 38481791.

It is a weak prime.

It is an emirp because it is prime and its reverse (38481791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19718483 - 2²⁰ = 18669907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19718483.

It is not a weakly prime, because it can be changed into another prime (19718443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9859241 + 9859242.

It is an arithmetic number, because the mean of its divisors is an integer number (9859242).

Almost surely, 2^19718483 is an apocalyptic number.

19718483 is a deficient number, since it is larger than the sum of its proper divisors (1).

19718483 is an equidigital number, since it uses as much as digits as its factorization.

19718483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 19718483 is about 4440.5498533402. The cubic root of 19718483 is about 270.1621476878.

The spelling of 19718483 in words is "nineteen million, seven hundred eighteen thousand, four hundred eighty-three".