202020019 has 2 divisors, whose sum is σ = 202020020. Its totient is φ = 202020018.

The previous prime is 202019969. The next prime is 202020023. The reversal of 202020019 is 910020202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202020019 - 2¹¹ = 202017971 is a prime.

It is a super-2 number, since 2×202020019² = 81624176153520722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202019984 and 202020011.

It is not a weakly prime, because it can be changed into another prime (202020029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010009 + 101010010.

It is an arithmetic number, because the mean of its divisors is an integer number (101010010).

Almost surely, 2^202020019 is an apocalyptic number.

202020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020019 is an equidigital number, since it uses as much as digits as its factorization.

202020019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 202020019 is about 14213.3746520663. The cubic root of 202020019 is about 586.7658131690.

The spelling of 202020019 in words is "two hundred two million, twenty thousand, nineteen".