2001019 has 8 divisors (see below), whose sum is σ = 2187648. Its totient is φ = 1822080.

The previous prime is 2000989. The next prime is 2001037. The reversal of 2001019 is 9101002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001019 - 2¹⁵ = 1968251 is a prime.

It is a super-2 number, since 2×2001019² = 8008154076722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (273456).

2^2001019 is an apocalyptic number.

2001019 is a deficient number, since it is larger than the sum of its proper divisors (186629).

2001019 is a wasteful number, since it uses less digits than its factorization.

2001019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 2001019 is about 1414.5737874003. The cubic root of 2001019 is about 126.0134990156.

The spelling of 2001019 in words is "two million, one thousand, nineteen".