2141705161 has 2 divisors, whose sum is σ = 2141705162. Its totient is φ = 2141705160.

The previous prime is 2141705147. The next prime is 2141705179. The reversal of 2141705161 is 1615071412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1748912400 + 392792761 = 41820^2 + 19819^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141705161 - 2²⁵ = 2108150729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2141705261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070852580 + 1070852581.

It is an arithmetic number, because the mean of its divisors is an integer number (1070852581).

Almost surely, 2^2141705161 is an apocalyptic number.

It is an amenable number.

2141705161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141705161 is an equidigital number, since it uses as much as digits as its factorization.

2141705161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 2141705161 is about 46278.5604897127. The cubic root of 2141705161 is about 1289.0009212436. Note that the first 3 decimals are identical.

Adding to 2141705161 its reverse (1615071412), we get a palindrome (3756776573).

The spelling of 2141705161 in words is "two billion, one hundred forty-one million, seven hundred five thousand, one hundred sixty-one".