20002020019 has 4 divisors (see below), whose sum is σ = 20243008296. Its totient is φ = 19761031744.

The previous prime is 20002020013. The next prime is 20002020029. The reversal of 20002020019 is 91002020002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20002020019 - 2⁹ = 20002019507 is a prime.

It is a super-2 number, since 2×20002020019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002019984 and 20002020011.

It is not an unprimeable number, because it can be changed into a prime (20002020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120494014 + ... + 120494179.

It is an arithmetic number, because the mean of its divisors is an integer number (5060752074).

Almost surely, 2^20002020019 is an apocalyptic number.

20002020019 is a deficient number, since it is larger than the sum of its proper divisors (240988277).

20002020019 is an equidigital number, since it uses as much as digits as its factorization.

20002020019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240988276.

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

The spelling of 20002020019 in words is "twenty billion, two million, twenty thousand, nineteen".