2001454881 has 4 divisors (see below), whose sum is σ = 2668606512. Its totient is φ = 1334303252.

The previous prime is 2001454859. The next prime is 2001454883. The reversal of 2001454881 is 1884541002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001454881 - 2¹⁵ = 2001422113 is a prime.

It is a super-2 number, since 2×2001454881² = 8011643281357448322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2001454883) 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 3 ways as a sum of consecutive naturals, for example, 333575811 + ... + 333575816.

It is an arithmetic number, because the mean of its divisors is an integer number (667151628).

Almost surely, 2^2001454881 is an apocalyptic number.

It is an amenable number.

2001454881 is a deficient number, since it is larger than the sum of its proper divisors (667151631).

2001454881 is an equidigital number, since it uses as much as digits as its factorization.

2001454881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667151630.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 2001454881 is about 44737.6226569987. The cubic root of 2001454881 is about 1260.2264817118.

Adding to 2001454881 its reverse (1884541002), we get a palindrome (3885995883).

The spelling of 2001454881 in words is "two billion, one million, four hundred fifty-four thousand, eight hundred eighty-one".