2001333534 has 16 divisors (see below), whose sum is σ = 4238118288. Its totient is φ = 627869312.

The previous prime is 2001333493. The next prime is 2001333541. The reversal of 2001333534 is 4353331002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9810357 + ... + 9810560.

It is an arithmetic number, because the mean of its divisors is an integer number (264882393).

Almost surely, 2^2001333534 is an apocalyptic number.

2001333534 is an abundant number, since it is smaller than the sum of its proper divisors (2236784754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001333534 is a wasteful number, since it uses less digits than its factorization.

2001333534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19620939.

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 2001333534 is about 44736.2664289277. The cubic root of 2001333534 is about 1260.2010122738.

Adding to 2001333534 its reverse (4353331002), we get a palindrome (6354664536).

The spelling of 2001333534 in words is "two billion, one million, three hundred thirty-three thousand, five hundred thirty-four".