1081706161 has 2 divisors, whose sum is σ = 1081706162. Its totient is φ = 1081706160.

The previous prime is 1081706111. The next prime is 1081706179. The reversal of 1081706161 is 1616071801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627803136 + 453903025 = 25056^2 + 21305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081706161 - 2²¹ = 1079609009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081706111) 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, 540853080 + 540853081.

It is an arithmetic number, because the mean of its divisors is an integer number (540853081).

Almost surely, 2^1081706161 is an apocalyptic number.

It is an amenable number.

1081706161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081706161 is an equidigital number, since it uses as much as digits as its factorization.

1081706161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 1081706161 is about 32889.3016192196. The cubic root of 1081706161 is about 1026.5255604665.

Adding to 1081706161 its reverse (1616071801), we get a palindrome (2697777962).

The spelling of 1081706161 in words is "one billion, eighty-one million, seven hundred six thousand, one hundred sixty-one".