11178913 has 2 divisors, whose sum is σ = 11178914. Its totient is φ = 11178912.

The previous prime is 11178887. The next prime is 11178917. The reversal of 11178913 is 31987111.

11178913 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10804369 + 374544 = 3287^2 + 612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11178913 is a prime.

It is equal to p₇₃₇₅₈₁ and since 11178913 and 737581 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11178917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5589456 + 5589457.

It is an arithmetic number, because the mean of its divisors is an integer number (5589457).

Almost surely, 2^11178913 is an apocalyptic number.

It is an amenable number.

11178913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11178913 is an equidigital number, since it uses as much as digits as its factorization.

11178913 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11178913 is about 3343.4881486256. The cubic root of 11178913 is about 223.5972847619.

The spelling of 11178913 in words is "eleven million, one hundred seventy-eight thousand, nine hundred thirteen".