1188989606464 has 63 divisors (see below), whose sum is σ = 2593600770243. Its totient is φ = 540406204800.

The previous prime is 1188989606419. The next prime is 1188989606471. The reversal of 1188989606464 is 4646069898811.

It is a happy number.

The square root of 1188989606464 is 1090408.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1188989606393 and 1188989606402.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 95949709 + ... + 95962099.

Almost surely, 2^{1188989606464} is an apocalyptic number.

1188989606464 is the 1090408-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1188989606464

1188989606464 is an abundant number, since it is smaller than the sum of its proper divisors (1404611163779).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1188989606464 is an frugal number, since it uses more digits than its factorization.

1188989606464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24816 (or 12404 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 70.

The spelling of 1188989606464 in words is "one trillion, one hundred eighty-eight billion, nine hundred eighty-nine million, six hundred six thousand, four hundred sixty-four".