2002018321 has 2 divisors, whose sum is σ = 2002018322. Its totient is φ = 2002018320.

The previous prime is 2002018303. The next prime is 2002018339. The reversal of 2002018321 is 1238102002.

It is a balanced prime because it is at equal distance from previous prime (2002018303) and next prime (2002018339).

It can be written as a sum of positive squares in only one way, i.e., 1373814225 + 628204096 = 37065^2 + 25064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002018321 - 2²³ = 1993629713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002018351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001009160 + 1001009161.

It is an arithmetic number, because the mean of its divisors is an integer number (1001009161).

Almost surely, 2^2002018321 is an apocalyptic number.

It is an amenable number.

2002018321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002018321 is an equidigital number, since it uses as much as digits as its factorization.

2002018321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2002018321 is about 44743.9193745921. The cubic root of 2002018321 is about 1260.3447282592.

The spelling of 2002018321 in words is "two billion, two million, eighteen thousand, three hundred twenty-one".