1188348062891 has 48 divisors (see below), whose sum is σ = 1384319838720. Its totient is φ = 1016496993600.

The previous prime is 1188348062827. The next prime is 1188348062917. The reversal of 1188348062891 is 1982608438811.

It is not a de Polignac number, because 1188348062891 - 2⁶ = 1188348062827 is a prime.

It is a super-2 number, since 2×1188348062891² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1188348062891.

It is not an unprimeable number, because it can be changed into a prime (1188348062191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 467300366 + ... + 467302908.

It is an arithmetic number, because the mean of its divisors is an integer number (28839996640).

Almost surely, 2^{1188348062891} is an apocalyptic number.

1188348062891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1188348062891 is a deficient number, since it is larger than the sum of its proper divisors (195971775829).

1188348062891 is a wasteful number, since it uses less digits than its factorization.

1188348062891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888 (or 3877 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 59.

The spelling of 1188348062891 in words is "one trillion, one hundred eighty-eight billion, three hundred forty-eight million, sixty-two thousand, eight hundred ninety-one".