210000002019 has 4 divisors (see below), whose sum is σ = 280000002696. Its totient is φ = 140000001344.

The previous prime is 210000001999. The next prime is 210000002059. The reversal of 210000002019 is 910200000012.

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 210000002019 - 2¹¹ = 209999999971 is a prime.

It is a super-2 number, since 2×210000002019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210000001989 and 210000002007.

It is not an unprimeable number, because it can be changed into a prime (210000002059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35000000334 + ... + 35000000339.

It is an arithmetic number, because the mean of its divisors is an integer number (70000000674).

Almost surely, 2^210000002019 is an apocalyptic number.

210000002019 is a deficient number, since it is larger than the sum of its proper divisors (70000000677).

210000002019 is an equidigital number, since it uses as much as digits as its factorization.

210000002019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70000000676.

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 210000002019 in words is "two hundred ten billion, two thousand, nineteen".