20020019 has 2 divisors, whose sum is σ = 20020020. Its totient is φ = 20020018.

The previous prime is 20020001. The next prime is 20020027. The reversal of 20020019 is 91002002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020019 - 2⁸ = 20019763 is a prime.

It is a super-2 number, since 2×20020019² = 801602321520722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20019985 and 20020012.

It is not a weakly prime, because it can be changed into another prime (20020619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010009 + 10010010.

It is an arithmetic number, because the mean of its divisors is an integer number (10010010).

Almost surely, 2^20020019 is an apocalyptic number.

20020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020019 is an equidigital number, since it uses as much as digits as its factorization.

20020019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20020019 is about 4474.3735874422. The cubic root of 20020019 is about 271.5322980025.

The spelling of 20020019 in words is "twenty million, twenty thousand, nineteen".