11185389113 has 2 divisors, whose sum is σ = 11185389114. Its totient is φ = 11185389112.

The previous prime is 11185389109. The next prime is 11185389151. The reversal of 11185389113 is 31198358111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10396453369 + 788935744 = 101963^2 + 28088^2 .

It is a cyclic number.

It is not a de Polignac number, because 11185389113 - 2² = 11185389109 is a prime.

It is a super-2 number, since 2×11185389113² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11185388113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5592694556 + 5592694557.

It is an arithmetic number, because the mean of its divisors is an integer number (5592694557).

Almost surely, 2^11185389113 is an apocalyptic number.

It is an amenable number.

11185389113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11185389113 is an equidigital number, since it uses as much as digits as its factorization.

11185389113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 41.

The spelling of 11185389113 in words is "eleven billion, one hundred eighty-five million, three hundred eighty-nine thousand, one hundred thirteen".