1188316313 has 2 divisors, whose sum is σ = 1188316314. Its totient is φ = 1188316312.

The previous prime is 1188316231. The next prime is 1188316331. The reversal of 1188316313 is 3136138811.

Together with next prime (1188316331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648822784 + 539493529 = 25472^2 + 23227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188316313 - 2¹⁸ = 1188054169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1188316333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594158156 + 594158157.

It is an arithmetic number, because the mean of its divisors is an integer number (594158157).

Almost surely, 2^1188316313 is an apocalyptic number.

It is an amenable number.

1188316313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188316313 is an equidigital number, since it uses as much as digits as its factorization.

1188316313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 1188316313 is about 34471.9641592991. The cubic root of 1188316313 is about 1059.1984901583.

The spelling of 1188316313 in words is "one billion, one hundred eighty-eight million, three hundred sixteen thousand, three hundred thirteen".