19828481 has 2 divisors, whose sum is σ = 19828482. Its totient is φ = 19828480.

The previous prime is 19828463. The next prime is 19828483. The reversal of 19828481 is 18482891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19280881 + 547600 = 4391^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 19828481 - 2¹⁴ = 19812097 is a prime.

It is a super-2 number, since 2×19828481² = 786337317534722, which contains 22 as substring.

Together with 19828483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19828483) 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 as a sum of consecutive naturals, namely, 9914240 + 9914241.

It is an arithmetic number, because the mean of its divisors is an integer number (9914241).

Almost surely, 2^19828481 is an apocalyptic number.

It is an amenable number.

19828481 is a deficient number, since it is larger than the sum of its proper divisors (1).

19828481 is an equidigital number, since it uses as much as digits as its factorization.

19828481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 41.

The square root of 19828481 is about 4452.9182566043. The cubic root of 19828481 is about 270.6635758489.

The spelling of 19828481 in words is "nineteen million, eight hundred twenty-eight thousand, four hundred eighty-one".