111091819193 has 2 divisors, whose sum is σ = 111091819194. Its totient is φ = 111091819192.

The previous prime is 111091819183. The next prime is 111091819213. The reversal of 111091819193 is 391918190111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110082613369 + 1009205824 = 331787^2 + 31768^2 .

It is a cyclic number.

It is not a de Polignac number, because 111091819193 - 2⁶ = 111091819129 is a prime.

It is a super-3 number, since 3×111091819193³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (111091819103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55545909596 + 55545909597.

It is an arithmetic number, because the mean of its divisors is an integer number (55545909597).

Almost surely, 2^111091819193 is an apocalyptic number.

It is an amenable number.

111091819193 is a deficient number, since it is larger than the sum of its proper divisors (1).

111091819193 is an equidigital number, since it uses as much as digits as its factorization.

111091819193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 44.

The spelling of 111091819193 in words is "one hundred eleven billion, ninety-one million, eight hundred nineteen thousand, one hundred ninety-three".