20201092019 has 2 divisors, whose sum is σ = 20201092020. Its totient is φ = 20201092018.

The previous prime is 20201092013. The next prime is 20201092139. The reversal of 20201092019 is 91029010202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201092019 - 2⁸ = 20201091763 is a prime.

It is a super-2 number, since 2×20201092019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20201092013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100546009 + 10100546010.

It is an arithmetic number, because the mean of its divisors is an integer number (10100546010).

Almost surely, 2^20201092019 is an apocalyptic number.

20201092019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201092019 is an equidigital number, since it uses as much as digits as its factorization.

20201092019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 20201092019 in words is "twenty billion, two hundred one million, ninety-two thousand, nineteen".