2001336453 has 24 divisors (see below), whose sum is σ = 2946310848. Its totient is φ = 1308857472.

The previous prime is 2001336451. The next prime is 2001336457. The reversal of 2001336453 is 3546331002.

It is a happy number.

2001336453 is a `hidden beast` number, since 2 + 0 + 0 + 13 + 3 + 645 + 3 = 666.

It is not a de Polignac number, because 2001336453 - 2¹ = 2001336451 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001336451) 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 23 ways as a sum of consecutive naturals, for example, 89101 + ... + 109277.

It is an arithmetic number, because the mean of its divisors is an integer number (122762952).

Almost surely, 2^2001336453 is an apocalyptic number.

It is an amenable number.

2001336453 is a deficient number, since it is larger than the sum of its proper divisors (944974395).

2001336453 is a wasteful number, since it uses less digits than its factorization.

2001336453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20393 (or 20390 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 2001336453 is about 44736.2990534532. The cubic root of 2001336453 is about 1260.2016249527.

Adding to 2001336453 its reverse (3546331002), we get a palindrome (5547667455).

The spelling of 2001336453 in words is "two billion, one million, three hundred thirty-six thousand, four hundred fifty-three".