1606413161 has 2 divisors, whose sum is σ = 1606413162. Its totient is φ = 1606413160.

The previous prime is 1606413157. The next prime is 1606413229. The reversal of 1606413161 is 1613146061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1182053161 + 424360000 = 34381^2 + 20600^2 .

It is an emirp because it is prime and its reverse (1613146061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1606413161 - 2² = 1606413157 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606413761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803206580 + 803206581.

It is an arithmetic number, because the mean of its divisors is an integer number (803206581).

Almost surely, 2^1606413161 is an apocalyptic number.

It is an amenable number.

1606413161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606413161 is an equidigital number, since it uses as much as digits as its factorization.

1606413161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1606413161 is about 40080.0843437236. The cubic root of 1606413161 is about 1171.1676951034.

The spelling of 1606413161 in words is "one billion, six hundred six million, four hundred thirteen thousand, one hundred sixty-one".