18022019 has 2 divisors, whose sum is σ = 18022020. Its totient is φ = 18022018.

The previous prime is 18022007. The next prime is 18022027. The reversal of 18022019 is 91022081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18022019 - 2⁸ = 18021763 is a prime.

It is a super-2 number, since 2×18022019² = 649586337672722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18021985 and 18022003.

It is not a weakly prime, because it can be changed into another prime (18022819) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9011009 + 9011010.

It is an arithmetic number, because the mean of its divisors is an integer number (9011010).

Almost surely, 2^18022019 is an apocalyptic number.

18022019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18022019 is an equidigital number, since it uses as much as digits as its factorization.

18022019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 18022019 is about 4245.2348580497. The cubic root of 18022019 is about 262.1809590330.

The spelling of 18022019 in words is "eighteen million, twenty-two thousand, nineteen".