20002019 has 6 divisors (see below), whose sum is σ = 20910036. Its totient is φ = 19131860.

The previous prime is 20002007. The next prime is 20002027. The reversal of 20002019 is 91020002.

It is not a de Polignac number, because 20002019 - 2⁸ = 20001763 is a prime.

It is a super-2 number, since 2×20002019² = 800161528152722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001994 and 20002012.

It is not an unprimeable number, because it can be changed into a prime (20002919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18377 + ... + 19434.

It is an arithmetic number, because the mean of its divisors is an integer number (3485006).

Almost surely, 2^20002019 is an apocalyptic number.

20002019 is a deficient number, since it is larger than the sum of its proper divisors (908017).

20002019 is an equidigital number, since it uses as much as digits as its factorization.

20002019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37857 (or 37834 counting only the distinct ones).

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

The square root of 20002019 is about 4472.3616803653. The cubic root of 20002019 is about 271.4508953674.

The spelling of 20002019 in words is "twenty million, two thousand, nineteen".