2002487281 has 4 divisors (see below), whose sum is σ = 2008065600. Its totient is φ = 1996908964.

The previous prime is 2002487269. The next prime is 2002487297. The reversal of 2002487281 is 1827842002.

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 2002487281 - 2⁷ = 2002487153 is a prime.

It is a super-2 number, since 2×2002487281² = 8019910621133545922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002487231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788621 + ... + 2789338.

It is an arithmetic number, because the mean of its divisors is an integer number (502016400).

Almost surely, 2^2002487281 is an apocalyptic number.

It is an amenable number.

2002487281 is a deficient number, since it is larger than the sum of its proper divisors (5578319).

2002487281 is an equidigital number, since it uses as much as digits as its factorization.

2002487281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578318.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 2002487281 is about 44749.1595563537. The cubic root of 2002487281 is about 1260.4431298096.

The spelling of 2002487281 in words is "two billion, two million, four hundred eighty-seven thousand, two hundred eighty-one".