2001335000 has 160 divisors (see below), whose sum is σ = 5404270080. Its totient is φ = 680400000.

The previous prime is 2001334997. The next prime is 2001335003. The reversal of 2001335000 is 5331002.

It is an interprime number because it is at equal distance from previous prime (2001334997) and next prime (2001335003).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001335003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7384865 + ... + 7385135.

It is an arithmetic number, because the mean of its divisors is an integer number (33776688).

Almost surely, 2^2001335000 is an apocalyptic number.

2001335000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001335000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702135040).

2001335000 is an abundant number, since it is smaller than the sum of its proper divisors (3402935080).

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

2001335000 is a wasteful number, since it uses less digits than its factorization.

2001335000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 2001335000 is about 44736.2828138414. The cubic root of 2001335000 is about 1260.2013199776.

Adding to 2001335000 its reverse (5331002), we get a palindrome (2006666002).

The spelling of 2001335000 in words is "two billion, one million, three hundred thirty-five thousand".