1161510011 has 2 divisors, whose sum is σ = 1161510012. Its totient is φ = 1161510010.

The previous prime is 1161509983. The next prime is 1161510019. The reversal of 1161510011 is 1100151611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161510011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161510019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580755005 + 580755006.

It is an arithmetic number, because the mean of its divisors is an integer number (580755006).

Almost surely, 2^1161510011 is an apocalyptic number.

1161510011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161510011 is an equidigital number, since it uses as much as digits as its factorization.

1161510011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 17.

The square root of 1161510011 is about 34080.9332471985. The cubic root of 1161510011 is about 1051.1732949444.

Adding to 1161510011 its reverse (1100151611), we get a palindrome (2261661622).

The spelling of 1161510011 in words is "one billion, one hundred sixty-one million, five hundred ten thousand, eleven".