2001165333 has 8 divisors (see below), whose sum is σ = 2671473696. Its totient is φ = 1332483600.

The previous prime is 2001165311. The next prime is 2001165337. The reversal of 2001165333 is 3335611002.

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 2001165333 - 2⁸ = 2001165077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001165337) 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, 403783 + ... + 408708.

It is an arithmetic number, because the mean of its divisors is an integer number (333934212).

Almost surely, 2^2001165333 is an apocalyptic number.

It is an amenable number.

2001165333 is a deficient number, since it is larger than the sum of its proper divisors (670308363).

2001165333 is an equidigital number, since it uses as much as digits as its factorization.

2001165333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813315.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 2001165333 is about 44734.3864717065. The cubic root of 2001165333 is about 1260.1657069793.

Adding to 2001165333 its reverse (3335611002), we get a palindrome (5336776335).

The spelling of 2001165333 in words is "two billion, one million, one hundred sixty-five thousand, three hundred thirty-three".