1000011161 has 2 divisors, whose sum is σ = 1000011162. Its totient is φ = 1000011160.

The previous prime is 1000011149. The next prime is 1000011223. The reversal of 1000011161 is 1611100001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999761161 + 250000 = 31619^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000011161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000014161) 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, 500005580 + 500005581.

It is an arithmetic number, because the mean of its divisors is an integer number (500005581).

Almost surely, 2^1000011161 is an apocalyptic number.

It is an amenable number.

1000011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000011161 is an equidigital number, since it uses as much as digits as its factorization.

1000011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1000011161 is about 31622.9530720962. The cubic root of 1000011161 is about 1000.0037203195.

Adding to 1000011161 its reverse (1611100001), we get a palindrome (2611111162).

The spelling of 1000011161 in words is "one billion, eleven thousand, one hundred sixty-one".