2190308161 has 2 divisors, whose sum is σ = 2190308162. Its totient is φ = 2190308160.

The previous prime is 2190308117. The next prime is 2190308213. The reversal of 2190308161 is 1618030912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2112321600 + 77986561 = 45960^2 + 8831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2190308161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2190306161) 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, 1095154080 + 1095154081.

It is an arithmetic number, because the mean of its divisors is an integer number (1095154081).

Almost surely, 2^2190308161 is an apocalyptic number.

It is an amenable number.

2190308161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190308161 is an equidigital number, since it uses as much as digits as its factorization.

2190308161 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 31.

The square root of 2190308161 is about 46800.7282101465. The cubic root of 2190308161 is about 1298.6787682956.

The spelling of 2190308161 in words is "two billion, one hundred ninety million, three hundred eight thousand, one hundred sixty-one".