19882243 has 2 divisors, whose sum is σ = 19882244. Its totient is φ = 19882242.

The previous prime is 19882223. The next prime is 19882273. The reversal of 19882243 is 34228891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19882243 is a prime.

It is a super-2 number, since 2×19882243² = 790607173422098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19882223) 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, 9941121 + 9941122.

It is an arithmetic number, because the mean of its divisors is an integer number (9941122).

Almost surely, 2^19882243 is an apocalyptic number.

19882243 is a deficient number, since it is larger than the sum of its proper divisors (1).

19882243 is an equidigital number, since it uses as much as digits as its factorization.

19882243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 19882243 is about 4458.9508855784. The cubic root of 19882243 is about 270.9079765437.

The spelling of 19882243 in words is "nineteen million, eight hundred eighty-two thousand, two hundred forty-three".