19982119 has 2 divisors, whose sum is σ = 19982120. Its totient is φ = 19982118.

The previous prime is 19982111. The next prime is 19982141. The reversal of 19982119 is 91128991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19982119 - 2³ = 19982111 is a prime.

It is a super-2 number, since 2×19982119² = 798570159460322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19982111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991059 + 9991060.

It is an arithmetic number, because the mean of its divisors is an integer number (9991060).

Almost surely, 2^19982119 is an apocalyptic number.

19982119 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982119 is an equidigital number, since it uses as much as digits as its factorization.

19982119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 40.

The square root of 19982119 is about 4470.1363513880. The cubic root of 19982119 is about 271.3608433707.

The spelling of 19982119 in words is "nineteen million, nine hundred eighty-two thousand, one hundred nineteen".