2002390521 has 16 divisors (see below), whose sum is σ = 2795204160. Its totient is φ = 1273361600.

The previous prime is 2002390477. The next prime is 2002390529. The reversal of 2002390521 is 1250932002.

It is a cyclic number.

It is not a de Polignac number, because 2002390521 - 2⁷ = 2002390393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002390491 and 2002390500.

It is not an unprimeable number, because it can be changed into a prime (2002390529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131430 + ... + 145871.

It is an arithmetic number, because the mean of its divisors is an integer number (174700260).

Almost surely, 2^2002390521 is an apocalyptic number.

It is an amenable number.

2002390521 is a deficient number, since it is larger than the sum of its proper divisors (792813639).

2002390521 is a wasteful number, since it uses less digits than its factorization.

2002390521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277416.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2002390521 is about 44748.0784056701. The cubic root of 2002390521 is about 1260.4228279841.

The spelling of 2002390521 in words is "two billion, two million, three hundred ninety thousand, five hundred twenty-one".