1161984456 has 96 divisors (see below), whose sum is σ = 3202617600. Its totient is φ = 380540160.

The previous prime is 1161984443. The next prime is 1161984487. The reversal of 1161984456 is 6544891611.

1161984456 is a `hidden beast` number, since 1 + 1 + 6 + 198 + 4 + 456 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1597965 + ... + 1598691.

It is an arithmetic number, because the mean of its divisors is an integer number (33360600).

Almost surely, 2^1161984456 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 1161984456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601308800).

1161984456 is an abundant number, since it is smaller than the sum of its proper divisors (2040633144).

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

1161984456 is a wasteful number, since it uses less digits than its factorization.

1161984456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1092 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1161984456 is about 34087.8931000436. The cubic root of 1161984456 is about 1051.3164006199.

The spelling of 1161984456 in words is "one billion, one hundred sixty-one million, nine hundred eighty-four thousand, four hundred fifty-six".