1186643968 has 120 divisors (see below), whose sum is σ = 2566835712. Its totient is φ = 547160064.

The previous prime is 1186643963. The next prime is 1186643987. The reversal of 1186643968 is 8693466811.

It is not an unprimeable number, because it can be changed into a prime (1186643963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17711071 + ... + 17711137.

Almost surely, 2^1186643968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1186643968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283417856).

1186643968 is an abundant number, since it is smaller than the sum of its proper divisors (1380191744).

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

1186643968 is an frugal number, since it uses more digits than its factorization.

1186643968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 139 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 1186643968 is about 34447.6990233020. The cubic root of 1186643968 is about 1058.7013787182.

The spelling of 1186643968 in words is "one billion, one hundred eighty-six million, six hundred forty-three thousand, nine hundred sixty-eight".