1606141321 has 2 divisors, whose sum is σ = 1606141322. Its totient is φ = 1606141320.

The previous prime is 1606141319. The next prime is 1606141333. The reversal of 1606141321 is 1231416061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302127225 + 304014096 = 36085^2 + 17436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606141321 - 2¹ = 1606141319 is a prime.

Together with 1606141319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1606141301) 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 as a sum of consecutive naturals, namely, 803070660 + 803070661.

It is an arithmetic number, because the mean of its divisors is an integer number (803070661).

Almost surely, 2^1606141321 is an apocalyptic number.

It is an amenable number.

1606141321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606141321 is an equidigital number, since it uses as much as digits as its factorization.

1606141321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1606141321 is about 40076.6929898164. The cubic root of 1606141321 is about 1171.1016290390.

Adding to 1606141321 its reverse (1231416061), we get a palindrome (2837557382).

The spelling of 1606141321 in words is "one billion, six hundred six million, one hundred forty-one thousand, three hundred twenty-one".