1188613 has 2 divisors, whose sum is σ = 1188614. Its totient is φ = 1188612.

The previous prime is 1188601. The next prime is 1188619. The reversal of 1188613 is 3168811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925444 + 263169 = 962^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188613 - 2⁵ = 1188581 is a prime.

1188613 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1188619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594306 + 594307.

It is an arithmetic number, because the mean of its divisors is an integer number (594307).

2^1188613 is an apocalyptic number.

It is an amenable number.

1188613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188613 is an equidigital number, since it uses as much as digits as its factorization.

1188613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 1188613 is about 1090.2352957046. The cubic root of 1188613 is about 105.9286632872.

The spelling of 1188613 in words is "one million, one hundred eighty-eight thousand, six hundred thirteen".