1166545984 has 56 divisors (see below), whose sum is σ = 2456261280. Its totient is φ = 547792896.

The previous prime is 1166545979. The next prime is 1166545997. The reversal of 1166545984 is 4895456611.

It is a happy number.

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, 716179 + ... + 717805.

Almost surely, 2^1166545984 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 1166545984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1228130640).

1166545984 is an abundant number, since it is smaller than the sum of its proper divisors (1289715296).

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

1166545984 is a wasteful number, since it uses less digits than its factorization.

1166545984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315 (or 2305 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 1166545984 is about 34154.7358941626. The cubic root of 1166545984 is about 1052.6902995425.

The spelling of 1166545984 in words is "one billion, one hundred sixty-six million, five hundred forty-five thousand, nine hundred eighty-four".