1091708113 has 2 divisors, whose sum is σ = 1091708114. Its totient is φ = 1091708112.

The previous prime is 1091708071. The next prime is 1091708147. The reversal of 1091708113 is 3118071901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1090848784 + 859329 = 33028^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091708113 - 2²¹ = 1089610961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1091708153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545854056 + 545854057.

It is an arithmetic number, because the mean of its divisors is an integer number (545854057).

Almost surely, 2^1091708113 is an apocalyptic number.

It is an amenable number.

1091708113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091708113 is an equidigital number, since it uses as much as digits as its factorization.

1091708113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 1091708113 is about 33041.0065373318. The cubic root of 1091708113 is about 1029.6797675423.

The spelling of 1091708113 in words is "one billion, ninety-one million, seven hundred eight thousand, one hundred thirteen".