1002160321 has 2 divisors, whose sum is σ = 1002160322. Its totient is φ = 1002160320.

The previous prime is 1002160303. The next prime is 1002160351. The reversal of 1002160321 is 1230612001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810199296 + 191961025 = 28464^2 + 13855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002160321 - 2¹⁹ = 1001636033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002160295 and 1002160304.

It is not a weakly prime, because it can be changed into another prime (1002160351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501080160 + 501080161.

It is an arithmetic number, because the mean of its divisors is an integer number (501080161).

Almost surely, 2^1002160321 is an apocalyptic number.

It is an amenable number.

1002160321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002160321 is an equidigital number, since it uses as much as digits as its factorization.

1002160321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1002160321 is about 31656.9158478839. The cubic root of 1002160321 is about 1000.7195890674.

Adding to 1002160321 its reverse (1230612001), we get a palindrome (2232772322).

The spelling of 1002160321 in words is "one billion, two million, one hundred sixty thousand, three hundred twenty-one".