1188630643201 has 4 divisors (see below), whose sum is σ = 1190588849152. Its totient is φ = 1186672437252.

The previous prime is 1188630643159. The next prime is 1188630643247. The reversal of 1188630643201 is 1023460368811.

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 a cyclic number.

It is not a de Polignac number, because 1188630643201 - 2³¹ = 1186483159553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188630643901) 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 in 3 ways as a sum of consecutive naturals, for example, 979102065 + ... + 979103278.

It is an arithmetic number, because the mean of its divisors is an integer number (297647212288).

Almost surely, 2^{1188630643201} is an apocalyptic number.

It is an amenable number.

1188630643201 is a deficient number, since it is larger than the sum of its proper divisors (1958205951).

1188630643201 is an equidigital number, since it uses as much as digits as its factorization.

1188630643201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958205950.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 1188630643201 in words is "one trillion, one hundred eighty-eight billion, six hundred thirty million, six hundred forty-three thousand, two hundred one".