1101566113 has 2 divisors, whose sum is σ = 1101566114. Its totient is φ = 1101566112.

The previous prime is 1101566111. The next prime is 1101566161. The reversal of 1101566113 is 3116651011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970509409 + 131056704 = 31153^2 + 11448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101566113 - 2¹ = 1101566111 is a prime.

Together with 1101566111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1101566111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550783056 + 550783057.

It is an arithmetic number, because the mean of its divisors is an integer number (550783057).

Almost surely, 2^1101566113 is an apocalyptic number.

It is an amenable number.

1101566113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101566113 is an equidigital number, since it uses as much as digits as its factorization.

1101566113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1101566113 is about 33189.8495477156. The cubic root of 1101566113 is about 1032.7697823283.

The spelling of 1101566113 in words is "one billion, one hundred one million, five hundred sixty-six thousand, one hundred thirteen".