2001919033 has 4 divisors (see below), whose sum is σ = 2006378100. Its totient is φ = 1997459968.

The previous prime is 2001919019. The next prime is 2001919037. The reversal of 2001919033 is 3309191002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1084253184 + 917665849 = 32928^2 + 30293^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001919033 - 2⁵ = 2001919001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001918992 and 2001919010.

It is not an unprimeable number, because it can be changed into a prime (2001919037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2228860 + ... + 2229757.

It is an arithmetic number, because the mean of its divisors is an integer number (501594525).

Almost surely, 2^2001919033 is an apocalyptic number.

It is an amenable number.

2001919033 is a deficient number, since it is larger than the sum of its proper divisors (4459067).

2001919033 is an equidigital number, since it uses as much as digits as its factorization.

2001919033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459066.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 2001919033 is about 44742.8098469464. The cubic root of 2001919033 is about 1260.3238927562.

The spelling of 2001919033 in words is "two billion, one million, nine hundred nineteen thousand, thirty-three".