1181889968 has 40 divisors (see below), whose sum is σ = 2618656800. Its totient is φ = 506211840.

The previous prime is 1181889949. The next prime is 1181889971. The reversal of 1181889968 is 8699881811.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339758 + ... + 343218.

It is an arithmetic number, because the mean of its divisors is an integer number (65466420).

Almost surely, 2^1181889968 is an apocalyptic number.

It is an amenable number.

1181889968 is an abundant number, since it is smaller than the sum of its proper divisors (1436766832).

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

1181889968 is a wasteful number, since it uses less digits than its factorization.

1181889968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525 (or 6519 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 59.

The square root of 1181889968 is about 34378.6266159659. The cubic root of 1181889968 is about 1057.2856767493.

The spelling of 1181889968 in words is "one billion, one hundred eighty-one million, eight hundred eighty-nine thousand, nine hundred sixty-eight".