11826078193 has 2 divisors, whose sum is σ = 11826078194. Its totient is φ = 11826078192.

The previous prime is 11826078191. The next prime is 11826078217. The reversal of 11826078193 is 39187062811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7866270864 + 3959807329 = 88692^2 + 62927^2 .

It is a cyclic number.

It is not a de Polignac number, because 11826078193 - 2¹ = 11826078191 is a prime.

It is a super-2 number, since 2×11826078193² (a number of 21 digits) contains 22 as substring.

Together with 11826078191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11826078191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5913039096 + 5913039097.

It is an arithmetic number, because the mean of its divisors is an integer number (5913039097).

Almost surely, 2^11826078193 is an apocalyptic number.

It is an amenable number.

11826078193 is a deficient number, since it is larger than the sum of its proper divisors (1).

11826078193 is an equidigital number, since it uses as much as digits as its factorization.

11826078193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 11826078193 in words is "eleven billion, eight hundred twenty-six million, seventy-eight thousand, one hundred ninety-three".