1188638144441 has 32 divisors (see below), whose sum is σ = 1389423974400. Its totient is φ = 1005499440000.

The previous prime is 1188638144413. The next prime is 1188638144443. The reversal of 1188638144441 is 1444418368811.

It is not a de Polignac number, because 1188638144441 - 2¹⁴ = 1188638128057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1188638144443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2597156 + ... + 3020346.

It is an arithmetic number, because the mean of its divisors is an integer number (43419499200).

Almost surely, 2^{1188638144441} is an apocalyptic number.

1188638144441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1188638144441 is a deficient number, since it is larger than the sum of its proper divisors (200785829959).

1188638144441 is a wasteful number, since it uses less digits than its factorization.

1188638144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423461.

The product of its digits is 2359296, while the sum is 53.

The spelling of 1188638144441 in words is "one trillion, one hundred eighty-eight billion, six hundred thirty-eight million, one hundred forty-four thousand, four hundred forty-one".