2001002019 has 8 divisors (see below), whose sum is σ = 2685672192. Its totient is φ = 1325166600.

The previous prime is 2001002011. The next prime is 2001002057. The reversal of 2001002019 is 9102001002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001002019 - 2³ = 2001002011 is a prime.

It is a super-2 number, since 2×2001002019² = 8008018160084152722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001001989 and 2001002007.

It is not an unprimeable number, because it can be changed into a prime (2001002011) 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 7 ways as a sum of consecutive naturals, for example, 2208159 + ... + 2209064.

It is an arithmetic number, because the mean of its divisors is an integer number (335709024).

Almost surely, 2^2001002019 is an apocalyptic number.

2001002019 is a deficient number, since it is larger than the sum of its proper divisors (684670173).

2001002019 is a wasteful number, since it uses less digits than its factorization.

2001002019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417377.

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

The square root of 2001002019 is about 44732.5610601495. The cubic root of 2001002019 is about 1260.1314255705.

The spelling of 2001002019 in words is "two billion, one million, two thousand, nineteen".