1188494115218 has 4 divisors (see below), whose sum is σ = 1782741172830. Its totient is φ = 594247057608.

The previous prime is 1188494115217. The next prime is 1188494115223. The reversal of 1188494115218 is 8125114948811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 963976403329 + 224517711889 = 981823^2 + 473833^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1188494115218.

It is not an unprimeable number, because it can be changed into a prime (1188494115217) by changing a digit.

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 as a sum of consecutive naturals, namely, 297123528803 + ... + 297123528806.

Almost surely, 2^{1188494115218} is an apocalyptic number.

1188494115218 is a deficient number, since it is larger than the sum of its proper divisors (594247057612).

1188494115218 is an equidigital number, since it uses as much as digits as its factorization.

1188494115218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594247057611.

The product of its digits is 737280, while the sum is 53.

The spelling of 1188494115218 in words is "one trillion, one hundred eighty-eight billion, four hundred ninety-four million, one hundred fifteen thousand, two hundred eighteen".