2001335534 has 16 divisors (see below), whose sum is σ = 3280812336. Its totient is φ = 908059200.

The previous prime is 2001335471. The next prime is 2001335537. The reversal of 2001335534 is 4355331002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001335537) 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, 69407 + ... + 93914.

It is an arithmetic number, because the mean of its divisors is an integer number (205050771).

Almost surely, 2^2001335534 is an apocalyptic number.

2001335534 is a deficient number, since it is larger than the sum of its proper divisors (1279476802).

2001335534 is a wasteful number, since it uses less digits than its factorization.

2001335534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163891.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2001335534 is about 44736.2887821509. The cubic root of 2001335534 is about 1260.2014320607.

Adding to 2001335534 its reverse (4355331002), we get a palindrome (6356666536).

The spelling of 2001335534 in words is "two billion, one million, three hundred thirty-five thousand, five hundred thirty-four".