1188284313 has 4 divisors (see below), whose sum is σ = 1584379088. Its totient is φ = 792189540.

The previous prime is 1188284311. The next prime is 1188284347. The reversal of 1188284313 is 3134828811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1188284313 - 2¹ = 1188284311 is a prime.

It is the 34472-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188284311) by changing a digit.

It is a nontrivial repunit in base 34471.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198047383 + ... + 198047388.

It is an arithmetic number, because the mean of its divisors is an integer number (396094772).

Almost surely, 2^1188284313 is an apocalyptic number.

It is an amenable number.

1188284313 is a deficient number, since it is larger than the sum of its proper divisors (396094775).

1188284313 is an equidigital number, since it uses as much as digits as its factorization.

1188284313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396094774.

The product of its digits is 36864, while the sum is 39.

The square root of 1188284313 is about 34471.5000108786. The cubic root of 1188284313 is about 1059.1889824047.

The spelling of 1188284313 in words is "one billion, one hundred eighty-eight million, two hundred eighty-four thousand, three hundred thirteen".